The cosine of an angle is defined as the sine of the complementary angle. The complementary angle equals the given angle subtracted from a right angle, 90°. For instance, if the angle is 30°, then its complement is 60°. Generally, for any angle θ, cos θ = sin (90° – θ).
Exact X=-8/5
Decimal form x=-1.6
Mixed number form x=-1/3/5
Its like...0.00024 like that I think. hope it helped :)
Answer:
select a b and c
Step-by-step explanation:
they are all false
