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Trustted Group TitleBest ResponseYou've already chosen the best response.0
help in wat
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
use half angle formulas to rewrite \[\sqrt{1\cos30 degrees/2}\]
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
\[\sin (\theta/2) = \sqrt{(1\cos \theta)/2}\]
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
using that formula o but..
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
so you can rewrite it as sin(15)
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
hwo do i get there i cantsee
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
what i mean the answer of the problem i sin 15 how do i get there id ont understand
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
theta = 30 so theta/2 = 30/2 = 15
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
can u show that
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
show what...prove that 30/2 = 15
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
no the whole process
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
well i looked up the halfangle identity for sin (theta/2) **shown above** it matches your expression except you have 30 degrees for the angle
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
nee help trig= rewrite this using half angle formula sqrt{1= \cos 135 degress/2}\]
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
is that a plus or minus ?
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
sorry let me rewrite it
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
\[rewrtite using half aangle formulas \sqrt{1+ \cos 135 dgrees/2}\]
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
plus means its the cosine half angle formula take the given angle > 135 divide it by 2 > 135/2 = 67.5 answer = cos(67.5)
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
so that my asnwer my teacher doesn tlike decimals
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
then write it as a fraction...the main thing is do you get the concept? find appropriate formula , then take half the angle
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
can u show me thewhole process and ow do is hwo it in fraction
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
what wre u gonnaa say
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
are you serious...i showed you step by step...there is no other process you should have a reference in your book or notes showing the halfangle formulas the fraction would simply be 135/2 http://www.freemathhelp.com/trigdoubleangles.html
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
need help trig rewrite using half angle idnetities =1cos210 degress/sin210 degrees
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
need help trig rewrite using half angle idnetities =1cos210 degress/sin210 degrees
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
\[\rightarrow \frac{1\cos 210}{\sin 210}\]
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
yes i know the formula i dont know how to use it
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
please don;t message me the same thing you are posting, thanks and this is different it isn't any of the halfangle formulas
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{1\cos 210}{\sin 210} = \csc 210  \cot 210\] not sure how else to rewrite it unless you want to use sum/difference formulas
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
s o how do i ewrite using half angle idnetities =1cos210 degress/sin210 degrees
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
by just saying it equals to 1cos theta/sin theta
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
umm i already answered you before regarding this question
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
no i dont grasp it
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
i don't think you can rewrite using halfangle formulas look for yourself...see that the expression does not match any the formulas
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
its what it says n my book
 2 years ago

ana321 Group TitleBest ResponseYou've already chosen the best response.0
yes it does tan theta /2
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.0
yes i am wrong...my ref sheet has a different but equivalent formula for tangent sorry...hey i learned something anyway, now just take half the angle
 2 years ago
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