Question

if tanA = a
--
b


then find




a sinA - b cosA
-----------------------
a sinA + b cosA ​

Answer 1

Answer:

tan(A) = a/b = sin(A)/cos(A)

sin(A) = a , cos(A) = b

a sinA - b cosA  /a sinA + bcosA      

by substituting we get

= a (a) - b(b)/a(a) + b(b)

= a²-b²/a²+b²

Step-by-step explanation: