The two smaller angles would be 45 each and the other angle would be 90 to equal 180.
To find a perpendicular line, you must flip the slope over and make it negative. So, the perpendicular slope would be -4/3. Plug the point into this slope equation and solve for the y intercept. 11 = -4/3(-5) + b. b = 13/3. So, the line would be y = -4/3(x) + 13/3
X+4+3x =
4x+4 (you sum the like terms )
Cos28=11/x
x=11/cos28
it will be c
