SSC CHSL 17 Mar 2020 Shift 3 Paper

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Question : 60 of 100

Marks: +1, -0

Find

x

if

2 \sin ^{2} x-1=0

${\π}/{4}$
${\π}/{2}$
0
$\π$

Solution:

2 \sin ^{2} x-1=0

⇒

\sin ^{2} x={1}/{2}

⇒

\sin x={1}/{\√{2}}=\sin ({\π}/{4})

∴

x={\π}/{4}

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