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trigonomtry

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Trigonomtry
Sinusoidal means looking like a basic sine graph. By how many degrees do you have to shift sin x = y to the right to make it look like the graph of cos x = y? (Enter only the number of degrees.)

trigonomtry
can you correct the rest for me please? Express each as a function of theta: a. sin (270deg + theta)= cos theta b. cos (pi + theta)= -cos theta c. tan (810 + theta)= ????? d. sin (theta - 180)= -sin theta

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