SOLUTION: use trigonometric identities to expand and simplify if possible a) sin(A+270) b) cos(B+180)

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Question 1143703: use trigonometric identities to expand and simplify if possible
a) sin(A+270)
b) cos(B+180)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
use trigonometric identities to expand and simplify if possible
a) sin(A+270)
b) cos(B+180)
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If you don't know the identities, look them up at "Half Angle Formulas" on Wikipedia.