Answer:
Part 1) 
Part 2) 
Step-by-step explanation:
we have

The cos(A) is negative, that means that the angle A in the triangle ABC is an obtuse angle and the value of the sin(A) is positive
The angle A lie on the II Quadrant
step 1
Find the measure of angle A

using a calculator

step 2
Find the sin(A)
we know that

substitute the value of cos(A)




step 3
Find tan(A)
we know that

substitute the values

Simplify

<span><span><span><span><span><span><span><span><span><span><span>5<span>a<span>−3</span></span></span><span>b2</span></span><span>(9)</span></span><span>a4</span></span><span>b6</span></span><span>(3)</span></span><span>a2</span></span><span>b3</span></span><span>(10)</span></span>a</span><span>b2</span></span><span>=<span><span><span>1350<span>a7</span></span><span>b13</span></span><span>a3</span></span></span><span>=<span><span>1350<span>a4</span></span><span>b<span>13</span></span></span></span>
Step-by-step explanation:
there you go mya hope this helped
Yes, since 50 x 10 = 500.