SOLUTION: Use the trigonometric identities to expand and simplify if possible a) sin (A+90) b) cos (B+270) c) tan (C+315)

Algebra ->  Trigonometry-basics -> SOLUTION: Use the trigonometric identities to expand and simplify if possible a) sin (A+90) b) cos (B+270) c) tan (C+315)      Log On


   

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) About Me  (Show Source):