SOLUTION: Express each of the following in terms of functions of theta.
a. cos(pi/4 - theta) = ?
b. sin(theta + 30deg) = ?
I don't really get the question too well? Am I supposed to rew
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-> SOLUTION: Express each of the following in terms of functions of theta.
a. cos(pi/4 - theta) = ?
b. sin(theta + 30deg) = ?
I don't really get the question too well? Am I supposed to rew
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Question 1163854: Express each of the following in terms of functions of theta.
a. cos(pi/4 - theta) = ?
b. sin(theta + 30deg) = ?
I don't really get the question too well? Am I supposed to rewrite the terms as other trig functions? Answer by solver91311(24713) (Show Source):
Use the sum and difference identities and the common values of sine and cosine.
So, for your situation:
You know, or should by now know, that , so:
Which is, as required, a function of
I'll leave the second problem to you. If you don't remember the identities, Google "Sine of the Sum and Difference". I trust you can recall the values for sine and cosine of or .
John
My calculator said it, I believe it, that settles it
