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Byju's Answer
Standard XII
Mathematics
Sign of Trigonometric Ratios in Different Quadrants
If cos x=-3...
Question
If
cos
x
=
−
3
5
,
x
lies in the third quadrant. Find the values of other five trigonometric function ?
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Solution
cos
x
=
−
3
5
x
is in
3
r
d
quadrant
in
3
r
d
quadrant only
tan
and
cot
are positive
⟹
sin
x
=
−
4
5
tan
x
=
4
3
cot
x
=
3
4
sec
x
=
−
5
3
csc
x
=
−
5
4
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