In the figure, AB=4 centimetres, BC =5 centimetres. <B=90° cos C is:

Challenger App

★

1M+ Downloads

A5 /√41

B5/4

C4/√41

D4/5

Answer:

Cos C $=\frac{5}{\sqrt{41}}$

Related Questions:

Find $cos^4 A - sin^4 A.$

Find the distance between top and bottom side of the parallelogram ABCD with side AC = 8, angle BAC = 60°