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sin (60 degrees + theta)-cos(30 degrees

- theta)is equal to
(A)2 cos theta
(B)2 sin theta
(C)theta
(D)1
could u plz explain this answer
thank you

1 answer

http://www.sosmath.com/trig/Trig5/trig5/trig5.html look at the sum and difference formulas

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