https://prnt.sc/qpmahf
thank you !
This is in Quadrant 4 cos and secant will be positive
sqrt(10^2 + (-4)^2 ) = sqrt116 = 2 sqrt 29 (hypotenuse)
Sec = 1/cos = hyp/adj = 2 sqrt 29 / 10 sqrt29/5
+36916 
