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“Find the trig function and simplify if you can”

 “Find the trig function and simplify if you can”-example-1

1 Answer

2 votes

Answer:


√(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

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