Question

if theta =30 verify that sin (60+theta )-sin(60-theta )=sin theta​

Answer 1

Step-by-step explanation:

given:

theta =30

to prove:

sin (60+theta )-sin(60-theta )=sin theta

solution:

taking LHS

sin (60+theta)-sin(60-theta)

on putting theta =30 , we get

=sin (60+30)-sin(60-30)

=sin90°-sin30°

=1-(1/2) [sin90°=1, sin30° =1/2]

=1/2=sin30°=sin theta=RHS

Answer 2

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