Question

If sinA=1/2 , find sin3A=​

Answer 1

Answer:

condition is given if:

Sin(A)=1/2

A=arc sin (1/2)

A=30 degree or pi/6 radian

so we find the value of A by the given condition now insert this in the next:

Sin(3A)=?

=Sin{3(pi/6)}

=Sin(pi/2)

=1

Hence Sin(3A)= 1