Question

if sin =1/2 then find the value of 3sin-4sin3​

Answer 1

Answer:

sin theta=1/2

theta=30°. →(1) (sin30°=1/2)

so, 3sin theta-4 sin theta

=3 sin30°-4 sin 30°

=3(1/2)-4(1/2). (from (1))

=(3-4)/2

=-1/2(answer)