SSC CHSL 1 Jun 2022 Shift 2 Paper

Section: Quantitative Aptitude

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Question : 63 of 100

Marks: +1, -0

Using 2cosA cosB = cos(A + B) + cos(A – B), find the value of cos75°cos15°.

$\;{1}/{2}$
$\;{1}/{4}$
$\;{{√{3}}}/{2}$
$\;{{√{3}}}/{4}$

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