Question

The value of sin square 30 degree minus cost square 30 degree is

Answer 1

Step-by-step explanation:

Correct option is

A

cos60

∘

cos

2

30°−sin

2

30°

=(

2

3

)

2

−(

2

1

)

2

=

4

3

−

4

1

=

2

1

=cos60°

Hence, the answer is cos60°.