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Mathematics 10 Online
OpenStudy (a1234):

Find the exact value of cos2theta. Is this 5/13?

OpenStudy (a1234):

OpenStudy (anonymous):

Hint: SOH *CAH* TOA ....Cos= Adjacent (3) over Hypotenuse (x) You need to find the hypotenuse to continue... ;) hope that helps!

OpenStudy (a1234):

Yes...I worked it all out. Is the answer 5/13?

OpenStudy (anonymous):

Thats what I got, but I'm going to check again just to make sure.

OpenStudy (anonymous):

Yup :)

OpenStudy (a1234):

Thanks!

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