SOLUTION: Use the trigonometric identities to expand and simplify if possible
a) sin (A+90)
b) cos (B+270)
c) tan (C+315)
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Question 1206693: Use the trigonometric identities to expand and simplify if possible
a) sin (A+90)
b) cos (B+270)
c) tan (C+315)
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
a)
b)
c)
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