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Using the Pythagorean theorem (see attached) and knowing the sinz and cosz are analytic functions. What can we say about (see attached)
Show that cos(A+B)=cosAcosB-sinAsinB using exponential expressions for sin and cos
What are the zeros of© BrainMass Inc. brainmass.com March 6, 2023, 1:26 pm ad1c9bdddf
Please see the attachment.
We note , . Then we have
So we ...
This shows how to use the Pythagorean theorem to work with trigonometric analytic functions.