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Byju's Answer
Standard XII
Mathematics
Circular Measurement of Angle
Evaluate each...
Question
Evaluate each of the following :
s
i
n
60
∘
c
o
s
2
45
∘
−
c
o
t
30
∘
+
15
c
o
s
90
∘
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Solution
We have,
s
i
n
60
∘
c
o
s
2
45
∘
−
c
o
t
30
∘
+
15
c
o
s
90
∘
=
√
3
2
(
1
/
√
2
)
2
−
√
3
+
15
×
0
=
√
3
−
√
3
+
0
=
0
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Q.
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