If a and b are complementary ,sin a is 4/5 find Cos b

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?

Which expression is a perfect cube? a. x8 b. y24 c. m28 d. x64

Which equation can be solved to find one of the missing side lengths in the triangle? cos(60o) = cos(60o) = cos(60o) = cos(60o) = mark this and return