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If theta is an acute angle and sintheta=costheta, find the value of : 3tan^2theta + 2sin^2theta - 1 |
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Answer» tion:If theta is an acute ANGLE and sin theta = cos theta , then VALUE of 2 tan^2 theta + sin^2 theta - 1 !! PLZ fast Only 1 day to go for my Maths SA1 :((( 2 θ is an acute angleand sin θ = cos θ⇒ sin θ = sin (90° - θ)⇒ θ = 90° - θ⇒ θ + θ = 2θ = 90°⇒ θ = 45°Thus,2tan2θ + sin2θ - 1 = 2tan245° + sin245° - 1 = 2(tan 45°)2 + (sin 45°)2 - 1Read more on Brainly.in - brainly.in/question/1686585#readmore |
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