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Some Applications Of Trigonometry

Question
CBSEENMA10007876

If sin 3θ = cos (θ - 6°) and θ-6° are acute angles, find the value of θ.

Solution
we have, sin 3θ = cos (θ - 6°)
⇒ cos (90°-3θ) = cos (θ-6°)
⇒90°-3θ = θ-6°
⇒84° = 4θ
⇒ θ = 21°

Some More Questions From Some Applications of Trigonometry Chapter