Write the value of sintheta cos(90^(@)-theta)+costheta sin(90^(@)-the

sintheta cos(90^(@)-theta)+costhetasin(90-theta)=sin theta *sintheta+costheta*costheta= sin^(2)theta+cos^(2)theta=1.

Sin 90 Degrees I Formula and its Derivation I Sample Examples

Simplify Cos theta/sin(90-theta)+cos(90-theta)/sec(90-theta)-3tan square 30 degrees

Evaluate : sin{theta}cos{theta}-cfrac{sin{theta}cos{(90^o-theta)}cos{theta }}{sin{(90^o-theta)}}-cfrac{cos{theta}sin{(90^o-theta)}sin{theta}}{cosec{(90 ^o-theta)}}.

Prove that:sin(90+theta )=costheta

cot(90° - θ).sin(90° - θ)/sinθ + cot40°/tan50° - (cos^2 20° + cos^2 70°) = ? - Sarthaks eConnect

sin theta cos(90-theta)costheta/sin(90-theta +cos theta sin(90-theta) sintheta/ cos(90-theta)=1 prove that

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sin theta cos theta - sin theta cos (90- theta) cos theta upon sec (90-theta)

How is sin (90°+θ) =cosθ? - Quora