Law of Sines:

sin (A) / a = sin (B) / b = sin (C) / c

Triangle ABC has measures a = 2, b = 2, and m∠A = 30°. What is the measure of angle B?

A. 15°

B. 30°

C. 45°

D. 60°

Question

Mathematics

Dandy

26 December, 03:17

Law of Sines:

sin (A) / a = sin (B) / b = sin (C) / c

Triangle ABC has measures a = 2, b = 2, and m∠A = 30°. What is the measure of angle B?

A. 15°

B. 30°

C. 45°

D. 60°

+4

Answers (1)

Know the Answer?

Dreamey · Answer 1

Hello,

as sin A/a = sin B/b

==> (1/2) / 2 = sin B/2

==>sin B=1/2

==>B=30° or 150°

But one say triangle ABC is not a plat triangle = = >150° is excluded.

Answer B: 30°

Law of Sines:sin (A) / a = sin (B) / b = sin (C) / cTriangle ABC has measures a = 2, b = 2, and m∠A = 30°. What is the measure of angle B?A. 15°B. 30°C. 45°D. 60°

Law of Sines:

sin (A) / a = sin (B) / b = sin (C) / c

Triangle ABC has measures a = 2, b = 2, and m∠A = 30°. What is the measure of angle B?

A. 15°

B. 30°

C. 45°

D. 60°