Question


“Find the trig function and simplify if you can”

Answer 1

`√(10)`/10

Explanation:

cos is adjacent side/hypotenuse

you need to find the hypotenuse

Let h = length of hypotenuse

`6^(2) + 18^(2) = h^(2)`

`h^(2)` = 36 + 324 = 360

h =
`√(360)` = 6
`√(10)`

cos (theta) = 6/6
`√(10)` = 1/
`√(10)` =
`√(10)`/10