Question

sin^2(30+A)-sin^2(30-A)=√3/2sin20​

Answer 1

Answer:

Correct option is A)

cos

2

30°−sin

2

30°

=(

2

3

)

2

−(

2

1

)

2

=

4

3

−

4

1

=

2

1

=cos60°

Hence, the answer is cos60°.