school help: so i have a math question… - Help.com

tubbyocharle
offline Verified (7 months, 2 weeks) Visit tubbyocharle's shoutbox
An Unknown Location

so i have a math question…

right now, we’re doing trig.
the question is
sin3x = 3sinx-=4(sinx)^3
prove using trig identities.
help?

This open post was written 7 months ago | V/U/S: 226, 7, 1 | Edit Post | Leave a reply | Report Post


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Since writing this post tubbyocharle may have helped people, but has not within the last 4 days. tubbyocharle is a verified member, has been around for 7 months, 2 weeks and has 42 posts and 108 replies to their name.

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math, school, Stupidity (How Tags Affect Reciprocity)

Replies (7)

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R.A.M offline Verified User (1 year, 2 months) Long Term User Shouts: 1 #
An Unknown Location | 7 months ago (13 minutes after post)

I cant understand your notation…
Can you clarify it…

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tubbyocharle offline Verified User (7 months, 2 weeks) Long Term User Shouts: 3 #
An Unknown Location | 7 months ago (15 minutes after post)

the equation?

sin3x = 3sinx - 4sin3x

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Help me with: Translation.
R.A.M offline Verified User (1 year, 2 months) Long Term User Shouts: 1 #
An Unknown Location | 7 months ago (18 minutes after post)

Ok now by sin3x you mean (sin x)^3 or sin((3*x)

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tubbyocharle offline Verified User (7 months, 2 weeks) Long Term User Shouts: 3 #
An Unknown Location | 7 months ago (19 minutes after post)

sin(3*x)

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Help me with: Translation.
R.A.M offline Verified User (1 year, 2 months) Long Term User Shouts: 1 #
An Unknown Location | 7 months ago (25 minutes after post)

Sorry the function sin(3*x)=3*sin(x)-4*sin(3*x) is not true…
I think your notation is still messed up just tell me if what I wrote just now is the correct equation

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tubbyocharle offline Verified User (7 months, 2 weeks) Long Term User Shouts: 3 #
An Unknown Location | 7 months ago (26 minutes after post)

…it is. i know for a fact it is. ill prove it…eventually. lol.

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Help me with: Translation.
R.A.M offline Verified User (1 year, 2 months) Long Term User Shouts: 1 #
An Unknown Location | 7 months ago (30 minutes after post)

Im guessing your right, but unless you get your notation straight Im not going to be able to make it out…
Like your other problem, if it wasnt an easy one I wouldnt have guessed your notation…
Please do make sure you use correct notation so people can understand it easily…

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