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:
3.9
Step-by-step 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?