If a pole 6m high casts a shadow 2√3 m long on the ground, then the sun’s elevation isĮxplanation: Given condition can be represented as follows:ġ4. If cos9α = sin α and 9α < 90°, then the value of tan 5α isġ3. If sin A = 1/2 and cos B = 1/2, then A + B = ?Įxplanation: Using trigonometric properties, we have:ġ2. If sin A + sin 2 A = 1, then cos 2 A + cos 4 A = ?ġ0. Since tan and cot are reciprocals of each other, so they cancel each other.ĩ.
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