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zubin chadha

· started a discussion

· 1 Months ago

problem 007 (Question: 337850.0 )

good question
by zubin chadha

Question:

If sin θ + sin2 θ + sin3 θ = 1, then cos6 θ – 4 cos4 θ + 8cos2 θ – 1 equals to?

Options:
A)

4

B)

3

C)

2

D)

0

Solution:

Ans: (b)

  

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