Question

Given the following triangle, if c = square root of 7 and a = 1, find the measure of B.
22°
38°
68°

Answer 1

Answer:

  68°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that the relation between the angle's adjacent side and the hypotenuse is ...

  Cos = Adjacent/Hypotenuse

This means ...

  cos(B) = a/c

  B = arccos(1/√7) ≈ 68°