Question

Find the length of a if the measure of angle A equals 62 degrees m the measure of angle B equals 39 degrees and b = 15.

Answer 1

this is using sine please help

Answer 2

then use the sine formula,
\(\Large \dfrac{a}{\sin A}= \dfrac{b}{\sin B}\)

where A = 62, b =15, B = 39
plug in :)