musiclover55
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Homework Statement
I have sin4x, can I use the double angle formula and make it 4sinxcosx?
Homework Equations
double angle formula
The Attempt at a Solution
sin4x----> 4sinxcosx
Can you multiply the double angle forumla?
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I have sin4x, can I use the double angle formula and make it 4sinxcosx?
double angle formula
sin4x----> 4sinxcosx
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zyj
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...try graphing both and see if they're the same.
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In a word, no.musiclover55 said:Homework Statement
I have sin4x, can I use the double angle formula and make it 4sinxcosx?
The double-angle formula says that sin(2A) = 2*sin(A)cos(A).
When you use formulas, you need to be very careful to follow the pattern being used.
If you write sin(4x) as sin(2(2x)), you can use the double-angle formula, replacing A in the above by 2x.
musiclover55 said:Homework Equations
double angle formula
The Attempt at a Solution
sin4x----> 4sinxcosx
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