Question

NEED HELP!!! Can someone help me with 5, 7, and 8???
Need this asap!!!
THANK YOU!!!

Answer 1

5.
`(√(2) )/(2)`

7.
`(√(2) )/(2)`

8.
`(√(2) )/(2)`

Explanation:

angles in a triangle equal 180 degrees. it is a right angle triangle so one angle is 90 degrees. both the other two are 45 each

5. cos(d)=cos(45)

7. sin(f)=sin(45)

8.cos(f)=cos(45)

Answer 2

5) 8/17 = .471

7) 8/17 = .471

8) 15/17 = .88

Explanation:

hope that helps