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22-07-2018
Mathematics

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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°

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pinquancaro pinquancaro

31-07-2018

In the given triangle ABC,

[tex] \sin A=\frac{Perpendicular}{Hypotenuse}=\frac{CB}{AB}=\frac{12.4}{36.7}=0.3378

A=\arcsin (0.3378)A=19.74^{\circ} [/tex]

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