Question: theta is an acute angle of a right triangle. Find the values of the 2 other trig ratios of theta.
cos θ = 8
After doing the work to find out what the other leg is using the Pythagorean theorum, I got a2= -63, making the missing leg an imaginary number. Am I doing something wrong? Thanks in advance.
Update: It does say that cosine=8 even though cosines can not be more than 1.
Does the problem really say that cos θ = 8 ?
The cosine of any real angle has to be between -1 and 1 (inclusively)
... I don't know what it means if the cosine really is bigger than 1 !