Упростить: sin^2 (pi - a) _________ (sin a-cos a)^2

Question

Упростить: sin^2 (pi - a) _________ (sin a-cos a)^2

Answer 1

sin^2(p-a)

-----------------------------=

(sina-cosa)^2

sin^2(p-a)

-----------------------------------------------=

sin^2a-2sina*cosa+cos^2

sin^2(p-a)

-----------------------------;

1-sin(2a)