Step-by-step explanation:
hope it will help you ......
They are the opposites of each other
(-13.2)+8.1=-5.1
13.2+(-8.1)=5.1
Sinα=h/w
w=h/sinα, we are told that h=15 ft and α=70° so
w=15/sin70° ft
w≈15.96 ft (to nearest hundredth of a foot)
-1/4 x 2/7
multiply the 2 top numbers and then multiply the 2 bottom numbers
1*2 = 2+4*7 =28
so answer is -2/28 which can reduce to - 1/14
