3 years ago

What is the exact value of cos 5pi/4 radians?

1 answer:

5 0

-Radical two (square root of two)/2
Because:
5pi/4 = 225 the reference angle for that is 45 degrees, cos 45 = Radical two (square root of two)/2 and because 225 is in quadrant three and only tangent is positive in quadrant 3, the cos is negative

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AnnyKZ [126]

Simplify
16/24=8/12=4/6=2/3
2/3=2/3
yes

8 0

3 years ago

Read 2 more answers

answer plsss answer plss

nignag [31]

Answer:

b 2，3，8

Step-by-step explanation:

Y=234678

Z=278910

X=12358

234678910 n 12358

=238

8 0

2 years ago

Does the quadratic function

NeX [460]

Answer:

no real zeros

Step-by-step explanation:

We can use b^2-4ac which is 25-16*29.

We know that is negative meaning there is no real zeros.

By the way, can you follow me on Brainly?

Thanks!

6 0

3 years ago

The circular mirror hanging on Belle's wall has a diameter of 18 inches. What is the

just olya [345]

Answer:

56.52 inches

Step-by-step explanation:

The circumference of a circle can be found using:

$c=\pi d$

We know the diameter is 18, and $\pi$ is being rounded to 3.14, so we can substitute them in.

c=3.14*18 <em>Multiply</em>

c=56.52

So, the circumference is 56.52 inches

7 0

3 years ago

What is the value of i20+12

Sladkaya [172]

Answer:

Step-by-step explanation:

132

Hope I helepd

4 0

4 years ago