Question

PLEASEEE HELP ME ASAP!!

Answer 1

Answer:

Hence,

The measure of ∠A is 60.065°

$\m\angle A= 60.065$

Step-by-step explanation:

Given:

ΔABC is a Right Angle Triangle at ∠ B = 90°

BC = Opposite side to ∠A = 13 unit

AC = Hypotenuse  = 15 unit  

To Find:

m∠A = ?  

Solution:

In Right Angle Triangle ABC ,Sine Identity,

$\sin A= \dfrac{\textrm{side opposite to angle A}}{Hypotenuse}$

Substituting the values we get

$\sin A= \dfrac{BC}{AC}=\dfrac{13}{15}=0.8666\\\angle A=\sin^{-1}(0.8666)\\m\angle A= 60.065\°$

Hence,

The measure of ∠A is 60.065°

$\m\angle A= 60.065$