Given that A and B are second quadrant angles, sin A = \frac{1}{3} and sin B = \frac{1}{5}, then find the value of cos (A − B).

SSC CPO 9 Nov 2022 Shift 3 Paper

Question : 130 of 200

Marks: +1, -0

Given that A and B are second quadrant angles, sin A =

\;{1}/{3}

and sin B =

\;{1}/{5}

, then find the value of cos (A − B).

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