Mathematics High School

Verify the identity sin^2x = cos^2x sec^2x-cos^2x

Answers

Answer 1

Answer:

Step-by-step explanation:

The right side of the identity

[tex]cos^{2} x sec^{2} x - cos^{2} x\\= cos^{2} x (\frac{1}{cos^{2} x} ) - cos^{2} x\\= 1 - cos^{2} x\\= sin^{2} x[/tex]

which is the same as the left side of the identity

Related Questions


Which expression is equivalent to 5(8+4)
A 8(5+4)
B) 4(8+5)
C) 5(9+3)
D) 5(10+1)

Answers

c, 5(9+3)
because both answers equal to 60

Answer:

5(8+4)=60

Step-by-step explanation:

To find the answer answer each one to get 60

A. 8(5+4)=64

B. 4(8+5)=52

C. 5(9+3)=60

D. 5(10+1)=55

So that means C is correct.

What is the sum of the interior angles of this pentagon?
O 900°
O 360°
O 540
O 180°

Answers

Answer:

Step-by-step explanation:

360 + 3*180 = -360 + 540 = 180

For four sides -360 + 180*4 = 360

n-2)*180

For a fifteen sided share the sum of angles = (15-2)*180 = 13*180

Answer:

180

Step-by-step explanation:

Which of the following is an example for a physical property that can be exploited for sparation?

Answers

The volume of an object

Please HELP ME T-T Roxxane all she wanna do is party all night

Answers

Answer:

Step-by-step explanation:

{-1,0,1,2}

What is the slope of these ordered pairs (3,-4(6,1)

Answers

Answer:

The slope would be 5/3

Step-by-step explanation:

Let me know if u have to simplify it

What is the square root of -16

Answers

Answer:

The square root of -16 is 4 i

Answer:

You can't but if it was 16, not -16 it will be 4.

Step-by-step explanation:

Select all ratios equivalent to 12:6.
120:60
35:9
55:3
10:5
Please help I’ll do anythng

Answers

10:5 is the answer hope u get a good grade

How do you think statistics may at times not say something? How can a well-designed study be used to carefully say everything that is important about a population? Is it possible to do so?

Answers

Answer:

While statistics are extremely valuable, they are also notorious for being a means that people use to make false and misleading arguments. Also far too often statistics are obtained by taking a sample from a larger group and assuming the whole group has the same characteristics as the sample.

A sample provides a smaller set of the population for review, that delivers data that is useful to represent the whole population. Surveying a smaller sample, as opposed to the entire population, can save precious time for researchers and offer urgent data.

Step-by-step explanation:

Hope it is helpful.....

The rectangle below has an areas of x^2+8x+15 square metres and a width of x+3 meters what expression represents the length of the rectangle

Answers

Answer: x+5 or ((x^2+8x+15)/(x+3))

Step-by-step explanation: First let's assign our variables.

x^2+8x+15 = Area

X+3 = Width

? = Length

If the equation of a=lw, then we can substitute in our variables.

a=lw

x^2+8x+15= L (x+3)

Now we must isolate L.

Divide both sides of the equation by 'x+3'

x^2+8x+15= L (x+3)

x+3                 x+3

x+5= L

(3i+5)+(2-6i) simplify

Answers

Answer:

(3i+5)+(2-6i)

⇒ 3i+5+2-6i

⇒3i-6i+5+2

⇒-3i+7

The simplified form of (3i+5)+(2-6i) will be -3i+7

how many solutions does 8x + 7 = 8x + 7 have

Answers

Answer:

infinetly many solutions

Step-by-step explanation:

Answer:

All real numbers

Step-by-step explanation:

Since they are the same x can be any number. Making the solution all real numbers.

Pls help!!!! Pic attached

Answers

I’m not sure but have you tried 7?
y=10
all you have to do is substitute the numbers given
hope this helps :)

66 POINTS FOR THIS QUESTION!!! There are 48 students in a school play. The ratio of boys to girls is 5:7. How many more girls than boys are in the play?

Answers

5+7=12
48/12=4
7-5=2
2x4=8
8 more girls

The tide in Port Aransas peaks every 12.2 hours. The tide ranges from 2.9 to 1.3 meters. Suppose that the low tide is at t=1, where t is the time in hours.

Amplitude:
Vertical Shift:
Period:
Phase Shift:
What direction is the phase shift?
To the nearest thousandths, determine the height of the table at 3.5 hours?

Answers

[tex]\int\limits^a_b {x} \, dx[/tex]Answer:

[tex]x^{2} \lim_{n \to \infty} a_n[/tex]

Step-by-step explanation:

heading here. mdcps-logo. Dadeschools.net. Remember Username. Please Wait... Forgot Username /Pas

Lol i need help plsplspls

Answers

Answer:

y = 15

y = -10

Step-by-step explanation:

y=-5x

y= -5(-3)

= 5 × 3 = 15

y = 15

y = -5x

y = -5(2)

y = -5 × 2

y = - (5 × 2)

5 × 2 = 10

y = -10

What is the equation of the line that passes through the point (5, 6) and has a slope
of 3/5?

Answers

Answer:

Step-by-step explanation:

help i don’t get this

Answers

Answer:

0.42

Step-by-step explanation:

4.2 * 1/10 = 4.2/10

= 0.42

At Putt Putt, they offer a special for unlimited mini golf. You decide to go golfing with your friends. After golfing and purchasing lots of food, you end up spending $50. In total you leave Putt Putt with $5. Let s represent the amount of money you started with.
Part 1: Write an equation involving s
Part 2: Solve for how much money you brought to Putt Putt.

Answers

Answer:

part 1: a-50=5. a=55

Step-by-step explanation:

because fifty five minus 50 is equal to 5

Math: If f(x) = 2x^2 - 5x - 15, what is f(-3)? *
O
24
42
18
3

Answers

Step-by-step explanation:

1 rst. 2 x2-5x-15 da 18 rest

Graph the solution to the following linear inequality in the coordinate plane.
2x + y > 4

Answers

Answer:

Step-by-step explanation:

Answer:

Please refer to the attachment

Hope it helps

Pls mark me as the brainliest

Thank you



Calculate the percentage increase of an item that cost R59.99 in 2020 and R 65.99 in 2021​

Answers

Answer:

the answer is of this question R = 10

Answer:

The answer is 6%

Step-by-step explanation:

[tex]65.99 - 59.99 = \frac{6 \times 100}{100} = 6\%[/tex]

find area of triangle ​

Answers

8 .. 4 x 4 x 1/2 = 8 ... sorry if I’m wrong

Answer:

8 in²

Step-by-step explanation:

formula for area of a triangle is 1/2(bxh)

1/2(4x4)

1/2(16)

8

Y'all need help here​

Answers

Answer:

A

Step-by-step explanation:

Answer:

b. 1 inch : 5 miles is sure

is it proportional or non proportional ​

Answers

the answer is c. okayyyyyy ty y ty ty e h a bc abjagained sjnsskemd bc dd

Answer:

Proportional

Step-by-step explanation:

It passes through (0,0) and is a completely linear line I hope this helps :))

help please? im giving brainliest for best answer

Answers

I’m confused, what is the question?

6(1 - 6x) < 38 - 4x
What is the answer to this equation.

Answers

Answer:

x>-1

Step-by-step explanation:

Answer:

x > -1

Step-by-step explanation:

2.
Write an equation of a line with the given slope and y-intercept.

m = 1, b = 4


A. y = –1x + 4


B. y = 4x + 1


C. y = x + 4


D. y = x – 4

Answers

This answer to this is C. y=x+4

Answer:

the answer is C

Step-by-step explanation:

You would take and the y axis would equal x since the m is 1 it would just be x and then since you have the 4 you would just add it to the y=x and then it would be y=x+4

Can someone pls help me

Answers

Answer:

10

Step-by-step explanation:

Answer: its an acute angle so its 90

Step-by-step explanation:

Find the value of x
Thanks bb please explain

Answers

Answer:

x=24

Step-by-step explanation:

Hello There!

Angle E and angle D are supplementary angles meaning that the sum of the two angles equals 180

So we setup an equation

180=2x+12+5x

step 1 combine like terms

5x+2x=7x

now we have

180=7x+12

step 2 subtract 12 from each side

12-12 cancels out

180-12=168

now we have

168=7x

step 3 divide each side by 7

7x/7=x

168/7=24

we're left with~ x=24

~TheMathWiz

Answer:

......... .............. .

Please help answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

y = -1/2x + 1

Step-by-step explanation:

Slope-intercept form:

y = mx + b, where m - slope, b - y-intercept

We are given two points on the graph:

(0, 1) and (2, 0)

The first point gives us the y-intercept:

b = 1

Finding the slope using slope formula:

m = (y2 - y1)/(x2 - x1)m = (0 - 1)/(2 - 0) = -1/2

The formula of the line:

y = -1/2x + 1
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