Question

Triangle ABC is shown. Which is CLOSEST to the measure of angle A?

Answer 1

c because the differene between b and are far

Answer 2

Answer:

B

Step-by-step explanation:

use sine formula

$\frac{sin~72}{2.5} =\frac{sin~A}{2.1} \\sin~A=\frac{2.1}{2.5} \times sin~72\\A=sin ^{-1}(\frac{21}{25} \times sin ~72) \approx 53^\circ$