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Jakob Littel

Feb 20, 2025

Algebra/ trig help please?

For a particular angle theta, the cosine function has the following values within one cycle of the function. Cos 0 =3, cos pi/4=0, cos pi/2 =-3, cos 3pi/4=0, cos pi = 3 What is the rule for the cosine function?Y = 1/3 cos2 theta Y= 2cos3 theta Y= 3cos theta/2Y= 3cos2 theta Please explain how you get the answer as well as what the answer is. I’m having a hard time understanding this. Thanks for any help! 🙂
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Anya Stehr

Feb 20, 2025

at theta =0, cos ntheta = 1only answer 3 and 4 agree with thisat theta = pi/4 (45deg) cos = .707, cos 2theta = 0, cos theta/2 =.924 only eq 4 agrees with this.... Show More
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