Question

Find m angle A


64.8°

61.6°

68.0°

99.9°

Answer 1

use the sine rule! :)

Answer 2

can u write it out so i can solve for the final answer?

Answer 3

do you know what the sine rule is ?

Answer 4

sineA/a = sineB/b = sineC/c

Answer 5

yep! So how do you think you would solve for angle A ?

Answer 6

sineA/23 ?

Answer 7

excellent ^_^
Now we know SineA/23 = ?
(use the information they gave you in the diagram... so B and b)

Answer 8

idk what to do after that..

Answer 9

look at your sine rule;
sineA/a = sineB/b
We know sineA/23 = sineB/b
So using the diagram, B= 50 and b =19.
Therefore sineA/23 = sine50/19