SSC CHSL 10 Jan 2017 Shift 3 Paper

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Question : 93 of 100

Marks: +1, -0

cot

-11π\/6

is equals to

$-√3$
$1\√3$
$-1/√3$
$√3$

Solution:

Expression : cot -11π/6
∵

cot(−x) = −cot(x)

=

−cot({11π}/6)

=

−cot(2π −π/6 )

=

−[−cot( π/ 6 )] = cot(6/π)]

=

√3

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