Question

If tanA + sinA = p and tanA – sinA = q, then 4 tanA sinA= ​

Answer 1

-- So, on adding both the equations 2*tanA = p+q

So, tan A = (p+ q)/2

-- On putting tan A values in equation 1,

sin A = (p - q)/2

4 tan A sin A

= 4* (p+q)/2 * (p - q)/2

=p^2 - q^2