Cos(65)= square root 1+cos(130)/2

Mathematics

1 answer:

Anarel [89]2 years ago

6 0

Answer:

Step-by-step explanation:

Cos(65°) = √(1 + cos(130°)) / 2

0.42=√(1 - 0.64)/2

0.42=√(0.36)/2

0.42²=√0.18²

You might be interested in

Does anybody know how to solve this ? 1<10+k<7

Ira Lisetskai [31]

That’s not Solve able

5 0

2 years ago

Which expression makes the equation true?

N76 [4]

1. C.

The rule of powers is that when a parenthesis is raised to a power, you multiply the two numbers. Since it is being raised to the second power, it needs to have a 10 in the parenthesis. That would make 20.

2. B

Firstly 10^2 = 100, so we know that the number must be 10. That leaves us with just A and B. Then we know the same thing from the previous equation, that they need to be multiplied together.

8 0

3 years ago

Addy bought a new shirt and she had a 20% off coupon . The coupon took $8.25 off of the price of her shirt. What did she pay wit

zloy xaker [14]

Answer:

$33

Step-by-step explanation:

Given: Addy had 20% off coupon.

The coupon took $8.25 off of the shirt price.

Lets assume the original cost of shirt be "x".

We know Addy had 20% off coupon, which help to reduce the price of shirt by $8.25.

∴ We can form an equation to know the original price of shirt.