Question

(Please help, urgent).

What is the value of r?

Round your final answer to the nearest whole number.

Answer 1

◆ APPLICATIONS OF TRIGONOMETRY ◆


`Heya \: ! \: \\ \\ We \: know \: that \\ \\ \: \sin( \alpha ) = (perpendicular)/(hypotenuse) \\ \\ \sin(67.4) = (12)/(r) \\ \\ \\ also \: , \\ \\ \sin(67.4) = 0.9231 \\ \\ comparing \: both \: ,\\ \\ (12)/(r) = 0.9231 \\ \\ r = (12)/(0.9231) \\ \\ r = 13 \: \: \: \: \: ans.`