Question

In ΔPQR, sin P= 3/4, sin R= 2/5, and p=40. Find the exact value of r.

Answer 1

Hello,

sin (P)/p=sin (R)/r
==>r=sin (P)/(p* sin (R))
r= (3/4)/(40*2/5)
r=3/4 * 5 /(40*2)=(3/4) /16=3/64