Question

If x =30 verify that
Sin 2x=2sinx cosx

Answer 1

Step-by-step explanation:

x = 30°

sin2x = 2 sinx .cosx

sin60 = 2 sin30.cos 30

√3/2 = 2×1/2 √3/2

√3/2 = √3/2

L.H.S = R.H.S

Answer 2

Answer:

verified

Step-by-step explanation:

x=30

sinx=sin30=1/2

cosx=cos30=√3/2

sin2x=sin2(30)=sin60

=√3/2

sin2x=2(1/2)(√3/2)

√3/2=2/2(√3/2)

√3/2=√3/2

LHS=RHS