Ask question

Ask question

All categories

3 years ago

9

Find the function value.. . cos^2(7pi/8)=

1 answer:

Greeley [361]3 years ago

4 0

To evaluate this function, we use the calculator. We change the setting to radian first because we are using pi and thensimply input the cosine of 7 pi over 8. Then we square the answer. <span>We expect this number to be less than 1. </span>The function value is 0.8536.

You might be interested in

Need help please assist me find the area of a regular hexagon

garri49 [273]

Answer:

The area of the regular hexagon is $166.3\ units^{2}$

Step-by-step explanation:

we know that

The area of a regular hexagon can be divided into 6 equilateral triangles

so

step 1

Find the area of one equilateral triangle

$A=\frac{1}{2}(b)(h)$

we have

$b=r=8\ units$

$h=4\sqrt{3}\ units$ ----> is the apothem

substitute

$A=\frac{1}{2}(8)(4\sqrt{3})$

$A=16\sqrt{3}\ units^{2}$

step 2

Find the area of 6 equilateral triangles

$A=(6)16\sqrt{3}=96\sqrt{3}=166.3\ units^{2}$

7 0

3 years ago

Please help me! Does ∡JLK = 102° ?

Lubov Fominskaja [6]

Answer:

36+102=138 180-138=42

Step-by-step explanation:

sorry i berly learning this ... i suck ... plz someone help this kid

7 0

3 years ago

16 points<br> 1) Write the following in standard form (answer). *<br> 4^5

m_a_m_a [10]

Answer:

1024

Step-by-step explanation:

You could put 4^5 into your calculator. It’s 4*4*4*4*4= 1024

3 0

3 years ago

UNLI Quiz Active 1 2 3 5 11 TIME What should be done to solve the equation? X+ 14 = 21 Add 14 to both sides of the equation. Sub

sladkih [1.3K]

I need help to and no one gives me help sjsjsj

7 0

3 years ago

Read 2 more answers

If the freshman class of 63 students has 11 more boys than girls, determine how many of each are in the class.g 1

torisob [31]

B + G = 63
B = G + 11

G + 11 + G = 63
2G + 11 = 63
2G = 63 - 11
2G = 52
G = 52/2
G = 26 <=== 26 girls

B = G + 11
B = 26 + 11
B = 37 <=== 37 boys

4 0

3 years ago