Question

I need the steps to do it

Answer 1

Http://www.mathportal.org/calculators/plane-geometry-calculators/right-triangle-calculator.php

www.mathportal.org/calculators/plane-geometry-calculators/right-triangle-calculator.php?val1=14&val4...

Result

b=23.2999

Explanation

To find side b we can use the definition: tan(angle)=opposite leg/adjacent leg

In this case we have:

tan(α)=ab

After substituting α=31o and a=14 we have:

tan(31o)=14b b=14tan(31o) b=140.6009 b=23.2999

Answer 2

Have all the sides = 180°

Take the 2 known angles, 31° and 90°. 90° = Right angle

180° - 90° = 90°

90° - 31° = 59°

The angles are: 31°, 90°, 59°.