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Math Question?
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Question:
SME needs more help : “1) To prove the first identity, it is ea...”
Respect Score
trig identities
Question Details
1.) 
2.) 
3.) 
Answer(s):
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Aya99 5 months ago
- Apprentice
- 1780
- Karma Pts
Answer Details
1) To prove the first identity, it is easier to startfrom the right hand side.
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2) For this one, you should start from the right hand sidetoo.
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&nb... -
pete2007 5 months ago
- Scholar
- 2260
- Karma Pts
Answer Details
if you want the prove use sin2x+cos2x= 13/sin2x -sin2x cos2x =sin2x(1-cos2x)=sin2x(1-(1-sin2x) =sin2x ( 1-1 +sin2x) = sin2xsin2x= sin4x
2/ cosx cos2x -sinx sin2x =cos(1-sin2x ) - sinx (1-cos2x) = cosx - cosx sin2x - sinx... -
SME 5 months ago
- Rookie
- 0
- Karma Pts
Answer Details
I don't know how to do them -
pete2007 5 months ago
- Scholar
- 2260
- Karma Pts
Answer Details
what is your question
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