Question

Use the tangent to find the length of side QR. Express your answer to the nearest tenth. The length of side QR is approximately _____ units.

Answer 1

3.9

Explanation:

tan = opposite side/adjacent side

tan 61 = 7.1/QR

QR tan 61 = 7.1

QR = 7.1/tan 61

= 3.9

Note: If you memorize the definitions of all the trig functions, then these kinds of problems will be much easier. OK?