RRB Assistant Loco Pilot and Technician Model Paper 17 with key

Question : 43 of 75

Marks: +1, -0

Sin 5θ = cos 4θ, then find the sin 3θ.

Solution:

Sin 5θ = Cos 4θ
5θ + 4θ = 90°
⇒ θ = 10°
sin 3θ = sin 30° =

1/2

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