Question

In ABCD, the measure of ZD=90°, BD = 20, CB = 29, and DC = 21. What is the value
of the cosine of C to the nearest hundredth?

Answer 1

Answer:

  0.72

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that the relation of interest is ...

  Cos = Adjacent/Hypotenuse

Then the cosine of angle C is ...

  cos(C) = CD/CB = 21/29

  cos(C) ≈ 0.72

Answer 2

Answer:

Step-by-step explanation: