Question

( sinA + cosA)²+(sinA - cosA²)​

Answer 1

secA + tanA = x



From now on I will just let s = sinA



Treating this as a quadratic with variable s and x is a constant we get:



Solving using the quadratic formula:





If sinA = – 1 then A = 270 degrees so since sec270 and tan270 are infinite the only answer seems to be:



Answer 2

Answer:

refer to the image for answer