Question
If sinθ = 3/5 and θ is an acute angle, find cos
θ.Solution
ATQ, sin²θ + cos²θ = 1 (3/5)² + cos²θ = 1 9/25 + cos²θ = 1 cos²θ = 16/25 cosθ = 4/5 Â
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TROPICAL
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