Question

In triangle ABC, angle B = 30°, a = 210, and b = 164. The measure of angle A to the nearest degree is

Answer 1

@mathslover could you help me? :)

Answer 2

According to sine rule, a/sin A=b/sinB=c/sinC

Answer 3

Use the sine rule to find angle A

Answer 4

for this question, you'll need to use your sine rule :)
Since we have the lengths of it's side and it's corresponding angle.
Therefore, if we draw out a picture it looks like this:


Then we can use the sine rule: