Question

Find the value of x. Round to the nearest tenth.

Answer 1

where's the equation? :)

Answer 2

You have an angle, an adjacent side, and a hypotenuse. Use cosine.

cos(angle) = adjacent side / hypotenuse

angle = 20°

adjacent side = x

hypotenuse = 11

cos(angle) = adjacent side / hypotenuse

cos(20°) = x / 11

Solve for x; multiply each side by *11.

11cos(20°) = x

Answer 3

is the answer 11.7?

Answer 4

< I am not a calculator

Answer 5

oh well i wanted to be sure because i have two choices 11.9 and 11.7

Answer 6

Here is a calculator

http://www.wolframalpha.com/input/?i=11cos%2820%C2%B0%29

Answer 7

oh thank you!