If \sin 3 \\theta=\cos (20^\circ-\\theta ), then \theta is equal to:

SSC CGL 13 Jun 2019 Shift 1 Paper

Question : 57 of 100

Marks: +1, -0

\sin 3 \θ=\cos (20°-\θ\ ),

then

\theta

is equal to:

Solution:

3 \θ+(20-\θ)=90

2 \θ=70

Q=35°

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