Question

if costheta=root3/2 and sin phi=1/2, evaluate sin(theta + phi)

Answer 1

Answer:

sinA is 1/2

Thus we can tell that A is 30°

cosB is √3/2

Thus we can tell that B is 30°

Now,

sin(B+A)

sin(30°+30°)

sin60°=√3/2

Answer 2

here Is your ANS

COSQ = √3/2 :- Q = π/6

sinπ = 1/2

we know that :- sin(Q+π) = -sin(Q)

so,, -sin(π/6). = -1/2 ans.

HOPE IT HELPS U

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