SSC CHSL 19 Mar 2020 Shift 2 Paper

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Question : 66 of 100

Marks: +1, -0

If

x=\tan 40°

, then the value of

2 \tan 50°

will be

${1}/{2 x}$
$2 x$
${1}/{x}$
${2}/{x}$

Solution:

Given,

x=\tan 40°

∴

2 \tan 50=2 \tan (90-40)°

=2 \cot 40°

=2 \×{1}/{\tan 40°}={2}/{x}

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