SOLUTION: Show that sin 2x/sin x=2cos x (Hint sin 2x = sin (x+x)) Use the sum formula to for sine to rewrite the left side of the equation. sin 2x/sin x= ?/sin x Simplify the resulti

Algebra ->  Trigonometry-basics -> SOLUTION: Show that sin 2x/sin x=2cos x (Hint sin 2x = sin (x+x)) Use the sum formula to for sine to rewrite the left side of the equation. sin 2x/sin x= ?/sin x Simplify the resulti      Log On


   

Question 641339: Show that sin 2x/sin x=2cos x (Hint sin 2x = sin (x+x))
Use the sum formula to for sine to rewrite the left side of the equation.
sin 2x/sin x= ?/sin x
Simplify the resulting expression. What is the result?
Therefore, sin 2x/sin x=2cos x
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Show that sin 2x/sin x=2cos x
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sin(2x) = 2sin(x)cos(x)