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Priyanka

· started a discussion

· 1 Months ago

doubt (Question: 192457.0 )

1-2 sin2 theta is 2 cos theta. in solution you have taken 1-sin2 theta as 2 cos theta

Question:
If sin\(\theta\) + sin2\(\theta\) = 1, then find the value of cos12\(\theta\) + 3cos10\(\theta\) + 3cos8\(\theta\) + cos6\(\theta\) –1.
Options:
A) 1
B) 3
C) 0
D) 2
Solution:
Ans: (c)


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