Use an inverse trigonometric ratio to find m∠A. You know the lengths of the ... In △PQR, PR = 23 mm, QR = 39 mm, and m∠R = 163°.
Answer:
Step-by-step explanation:
If you foil this equation you will get:
And by dividing it, you will get;
That is your answer!
2x+9=1x-5
2x-1x=-5-9
x=-14