help me pls

Call the height of the triangle, y

Call the base length, x

And

sin ( theta)  =   y / hypotenuse   ⇒  hypotenuse * sin (theta)  =  y

cos (theta)  =  x / hypotenuse  ⇒ hypotenuse *cos (theta)  = x

So.....this must mean that the hypotenuse  = 10