Answer:
17
Step-by-step explanation:
angle one and angle three are equal to each other
so if you set the equations equal to each other
(4x+2)=( 5x-15)
move the 4x the right by subtracting it giving you 1x
then add 15 to 2 giving you 17
17=1x
Here's a photo of the solution. Hope it helps and please give brainlist!
When is cos (x) = 0? <em>at 90° (aka π/2)</em>