Question

Solve (sin43+cos47)×(sin43+cos47)

Answer 1

(Sin 43°+cos 47°)(sin°43+cos47°)
{Sin43°+sin(90°-43)}{sin43°+ sin(90°-43)}
(Sin 43°+sin43°)(sin43°+sin43°)
2 sin43°(2 sin43°)
4 sin *2 43
Or it may be done by other method but by just replacing sin 43°by cos 47°
Its answer can also be 4 cos *2 47