Question

In triangle PQR, we have angle Q= 90 depress and sin P= 1/4. Find sin R.

Answer is .968 but how to I get there.

Answer 1

angle R = 75 degrees because angle P = 40 and you have a 90 degree angle. 90+75+15=180. standard triangle. then, you just take sin r which is 75 sin, and you get 0.966