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Byju's Answer
Standard X
Mathematics
Range of Trigonometric Ratios from 0 to 90 Degrees
Evaluate: co...
Question
Evaluate:
c
o
t
2
30
∘
−
2
c
o
s
2
60
∘
−
3
4
s
e
c
2
45
∘
−
4
s
e
c
2
30
∘
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Solution
c
o
t
2
30
∘
−
2
c
o
s
2
60
∘
−
3
4
s
e
c
2
45
∘
−
4
s
e
c
2
30
∘
=
(
√
3
)
2
−
2
(
1
2
)
2
−
(
3
4
)
(
√
2
)
2
−
4
(
2
√
3
)
2
=
3
−
2
4
−
6
4
−
16
3
=
12
4
−
2
4
−
6
4
−
16
3
=
(
12
−
2
−
6
4
)
−
16
3
=
4
4
−
16
3
=
1
−
16
3
=
3
3
−
16
3
=
−
13
3
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