Please help and show workings. Thank you!

Question

1. Sin (∠X) = 
2. Cos (∠X) = 
3. Tan (∠X) =

Answer 1

Pythagorean says YZ must be

sqrt( 10^2 - 8^2) =

sqrt( 100 - 64) =

sqrt(36) =

6

sin X = 6/10 = 3/5

cos X = 8/10 = 4/5

tan X = 6/8 = 3/4