# SOLUTION: sin 50 degrees equals 2 sin 25 degrees.... true or false? Also an explanation please?

Algebra ->  Algebra  -> Trigonometry-basics -> SOLUTION: sin 50 degrees equals 2 sin 25 degrees.... true or false? Also an explanation please?      Log On

 Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Algebra: Trigonometry Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Trigonometry-basics Question 212337This question is from textbook : sin 50 degrees equals 2 sin 25 degrees.... true or false? Also an explanation please?This question is from textbook Found 3 solutions by stanbon, rapaljer, Alan3354:Answer by stanbon(57377)   (Show Source): You can put this solution on YOUR website!sin 50 degrees equals 2 sin 25 degrees.... true or false? --------------------- Ans: False --------------------- Why?: sin(50) = sin(2*25) not 2*sin(25) ----------------------------------- Cheers, Stan H. Answer by rapaljer(4667)   (Show Source): You can put this solution on YOUR website!False!! It is NOT true that sin(AB) = A*sin(B) R^2 Answer by Alan3354(30993)   (Show Source): You can put this solution on YOUR website!Sin(25) = 0.422618261 2sin(25) = 0.845236523 ------------- sin(50) = 0.766044443 --------------------- Or, sin(2*25) = 2sin(25)cos(25) then, is 2sin(25)cos(25) = 2sin(25)? 2sin(25)cos(25) = 2sin(25)? cos(25) = 1? No, cos(0) = 1