Anonymous

Angles U, T and V are 23 degrees, 67 degrees and 90 degrees respectively because there are 180 degrees in a triangle

Anonymous

I used to have this problem in high school. But I forgot it was like 15 years ago. I think we used sin and cos to calculate the angles. sin 30 or sin 45.....

Anonymous

2x+3+8x+10+6x+7 = 180 ; 2x+8x+6x = 180- 3+10+7 ; 16x=160 ; x=10 80=10=90, 20+3=23, 60+7 = 67.

Anonymous

16x = 160 x = 10 ∠UTV = 67° ∠TUV = 23° ∠UVT = 90°