Q10 of 90 Page 7

Mark the correct alternative in the following:

If cot (α + β) = 0, then sin (α + 2 β) is equal to


cot (α + β) = 0


sin (α + 2 β)= sin (α +β) cos(β) + sin(β) cos (α +β)


put


sin (α + 2 β)= cos(β)

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