Sin theta +cos theta =1,find the value of sin 2theta
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Step-by-step explanation:
Sinθ + Cosθ = 1
Square on both sides.
(Sinθ+ Cosθ)² = 1
Sin²θ + Cos²θ + 2SinθCosθ = 1
1 + 2SinθCosθ = 1
2SinθCosθ = 0
Sin2θ = 0 (∵ Sin2θ = 2 SinθCosθ)
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