Question

what is the approximate perimeter of the triangle below? Angle A is 50, Angle B is 60 and line CA is 90 in

Answer 1

Answer: 267

Explanation:

Answer 2

267.3 in.

Explanation:

Using the Sine Rule:

90 / sin 60 = BC/ sin 50

BC = 90 sin 50 / sin 60 = 79.6 in.

Angle C = 180 - 50 - 60 = 70 degrees.

90 / sin 60 = AB / sin 70

AB = 90 sin 70 / sin 60 = 97.7 in.

So the perimeter = 90+ 79.6 + 97.7

= 267.3 in.