Question

value of sin^2 30-cos^2 60​

Answer 1

Answer:

we know that,

sin 30°=1/2,Cos60°=1/2

Now sin²30+cos²60=1/2×1/2+1/2×1/2

=1/4+1/4

=2/4=1/2

Hope it helps

Answer 2

Answer:

sin30=1/2, cos60=1/2

so sin^2 30-cos^2 60=(1/2)^2-(1/2) ^2=1/4-1/4=0

therefore sin^2 30-cos^2 60=0

(or)

cos60=cos(90-30)

cos60=sin30 since sin(90-theta) =cos theta

replace cos 60 by sin30

so sin^2 30-sin^2 30 =0

THEREFORE IN ANY WAY YOUR ANSWER IS 0(Zero).

I hope you are satisfied by my answer.