SOLUTION: sin 50 degrees equals 2 sin 25 degrees.... true or false? Also an explanation please?
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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(75887) (Show Source): You can put this solution on YOUR website!
sin 50 degrees equals 2 sin 25 degrees.... true or false?
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Ans: False
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Why?: sin(50) = sin(2*25) not 2*sin(25)
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Cheers,
Stan H.
Answer by rapaljer(4671) (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(69443) (Show Source): You can put this solution on YOUR website!
Sin(25) = 0.422618261
2sin(25) = 0.845236523
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sin(50) = 0.766044443
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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
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