Question

PLEASE HELP ME In ΔABC, find the measure of ∡A rounded to the nearest tenth. Triangle ABC where angle C is a right angle. AB measures 36 point 7. BC measures 12 point 4. Measure of angle A is unknown. 18.7° 19.74° 70.3° 71.4°

Answer 1

In the given triangle ABC,

`\sin A=(Perpendicular)/(Hypotenuse)=(CB)/(AB)=(12.4)/(36.7)=0.3378</p><p>A=\arcsin (0.3378)A=19.74^(\circ)`