Question

If x=2sin ²Ɵ and y=2cos ²Ɵ+1, then find x+y

Answer 1

Answer:

x+y=4

Step-by-step explanation:

x=2sin ²Ɵ

y=2cos ²Ɵ+1

x+y=2sin ²Ɵ +2cos ²Ɵ+1

=2(sin ²Ɵ+cos ²Ɵ)+1

=2(1+1)

=2(2)

=4

x+y=4