15.
(sin 0+ cos 0)2 = 1 + 2 sin 8. cos e
20
Answers
Answered by
4
Step-by-step explanation:
ANSWER
From the above equation, we get
cosθ=sinθ
Hence
θ=45
0
Therefore
sin
4
θ+cos
4
θ
=sin
4
45
0
+cos
4
45
0
=2×(
2
1
)
4
=2×
4
1
=
2
1
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