Please see the attachment
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 February 24, 2021, 2:29 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.