Question

The value of the expression (cos 80 - sin 80) is _________ and why ??
Plzz fast urgent

Answer 1

hello,

(sin80°- cos(90°-80°))

(sin80° - sin10°)

(sin70°)

hope this helps u out

Answer 2

True, for 0 > 45°, sin 0> cos 0, so cos 80° -sin 80° has a negative value.