Mark the Correct alternative in the following:
The value of 2 cos x – cos 3x – cos 5x – 16 cos³ x sin² x is

Question

Mark the Correct alternative in the following:If 5 sin α = 3 sin (α + 2 β) ≠ 0, then tan (α + β) is equal to

Philoid · Accepted Answer

Given 5 sin α = 3 sin (α + 2 β) ≠ 0, then the value of tan (α + β) is

Consider the given equation,

5 sin α = 3 sin (α + 2 β)

By applying componendo and dividendo

We get

[ using and sum of angles ]

This clearly shows, tan (α + β) = 4 tan β

Hence the answer is option C.

Mark the Correct alternative in the following:
If 5 sin α = 3 sin (α + 2 β) ≠ 0, then tan (α + β) is equal to