Question

Need help asap. low geometry grade

Answer 1

see answers below

Explanation:

B = 180 -90 - 40 = 50° (angles in triangle add up to 180). so, 50 + 40 + 90 = 180.

Sine rule: a/SIN A = b/SIN B = c/SIN C

b/sin 50 = 25/sin 40

b = (25 sin 50) / sin 40

= 29.8.

In a right-angled triangle, a ² + b ² = c ²

c ² = 25² + b²

= 1512.67

c = √1512.67

= 38.9