let-a-gt-0-and-b-gt-0-calculate-acos-2-bsin-2-dpi-2-find-pi-4-pi-2-2cos-2-3-sin-2-d-

Question Number 45520 by maxmathsup by imad last updated on 14/Oct/18

l e t a > 0 a n d b > 0 c a l c u l a t e \int \sqrt{{a c o s}^{2} θ + {b s i n}^{2} θ} d π

2) f i n d \int_{\frac{π}{4}}^{\frac{π}{2}} \sqrt{2 {c o s}^{2} θ + 3 {s i n}^{2} θ} d θ .

Commented by Meritguide1234 last updated on 14/Oct/18