Question
If cos θ = 3/5, find the value of sin
2θ:Solution
sin 2θ = 2sin θ cos θ We know cos θ = 3/5, and sin² θ + cos² θ = 1, so sin θ = 4/5 sin 2θ = 2 * (4/5) * (3/5) = 24/25 Correct option: b
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