SSC CGL Model Paper 8

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Question : 71 of 100

Marks: +1, -0

If

\sec θ= 5/3

, then what is the value of cosec θ?

0.8
1.25
$4/3$
$3/4$

Solution:

\secθ=5/3

In right angled ΔACB,

(A C )^2 = (A B )^2 -(B C )^2

= (5)^2 - ( 3 )^ 2 = 2 5 - 9 = 16

∴

AC =√16 =4

∴

\cosec θ =\AB/\AC=5/4=1.25

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