Question

How would you set up to solve for angle B using trigonometry?

Answer 1

The sum of angles of any triangle is always 180 degrees

Now here

Angle A = 25° , Angle C = 90°

Now A+B+C= 180

25° +B + 90°=180°

115° +B = 180°

Subtract 115° from both sides

115°-115° +B = 180°-115°

B=65°

Angle B = 65 degrees