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Byju's Answer
Standard XII
Mathematics
Sign of Trigonometric Ratios in Different Quadrants
Solve: 12o. ...
Question
Solve:
cot
12
o
.
cot
38
o
.
cot
52
o
.
cot
60
o
.
cot
78
o
Open in App
Solution
cot
12
°
⋅
cot
38
°
⋅
cot
52
°
⋅
cot
60
°
⋅
cot
78
°
=
(
cot
12
°
⋅
cot
78
°
)
⋅
(
cot
38
°
⋅
cot
52
°
)
⋅
cot
60
°
=
(
cot
12
°
⋅
cot
(
90
°
−
12
°
)
)
⋅
(
cot
38
°
⋅
cot
(
90
°
−
38
°
)
)
⋅
cot
60
°
=
(
cot
12
°
⋅
tan
12
°
)
⋅
(
cot
38
°
⋅
tan
38
°
)
⋅
cot
60
°
=
1
×
1
×
1
√
3
=
1
√
3
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