Well you know a triangle adds up to 180 degrees. And angle W is a right angle, making it 90. If you subtract 180-90 you get 90, so the other 2 angles must add up to 90. Then you put the equation 2x+x=90 because that's what you are given. You'd combine like terms, getting 3x=90 then divide on both sides, x=30. Therefore, 2x=60. That's means V is 30 and T is 60