Identify the exact value of the trigonometric functions sin x and cos x.
If x is an acute angle and tan x = 5,
The value of sin x = .
The value of cos x = .
For this case, we have the following expression: so x = 5 Clearing x we have: x = atan (5) x = 78.69 degrees We have then that the values for the sine and the cosine are: sine (x) = sine (78.69) = 0.98 cosine (x) = cosine (78.69) = 0.19 Answer: The value of sine x = 0.98 The value of cos x = 0.19
