Question

If Cos^2 A + Sin A =2
Then two valuesof A is ?
Note - steps are required

Answer 1

we know that sin^2 A + cos^2 A = 1

So,

1-Sin^2A+ Sin A=1

Sin^2A - Sin A = 0

Sin A ( Sin A-1) =0

Sin A = 0,1

Answer 2

2 values of A are 0 and 90 when

SinA is 0 and 1