Question

Solve for x. Round your answer to 2 decimal places.

Answer 1

This is a wonderful application of the Cosine function. What's your plan?

Answer 2

i was thinking adj/hyp

Answer 3

Correct, Dan, so you would do \[\cos(\theta) = adj/hyp.\]

Answer 4

To bring your cos value over to the other side of the equation, you would perform the arccos function.

Answer 5

omg sorry my internet shut off

Answer 6

so is to cos-1

Answer 7

Right, so first off you would have cos(58) = 17/x. Now that I think of it, you don't have to do cos-1... Multiply both sides of the equation by x, and you have xcos(58) = 17. Divide by cos(58) and you'll have your hyp.

Answer 8

142.64122067?

Answer 9

or 32.08035855

Answer 10

I did not get that, no. Try again. Make sure you have x = 17/(cos(58)) if you're using a calculator.

Answer 11

Yes, the 32.08.