Question

If θ is an acute angle and sin θ = cos θ, find the value of 3 tan2 θ + 2 sin2 θ– 1.

Answer 1

Hey there !!!!

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 θ is an acute angle 

⇒⇒ θ<90°

sin θ = cos θ

When we draw sin θ and cos θ graphs both these graphs intersect each other at  θ=45°

⇒⇒ at  θ=45°   sin θ=cos θ

=3tan²θ+2sin²θ-1

=3tan²45+2sin²45-1

tan45=1 sin45=1/√2

=3*1+2*1/(√2)²-1

=2+2*1/2

=2+1=3
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Hope this helped you................

Answer 2

I want to help don't want to become a brainlist