Recent content by Theman123

Homework Statement I am asked to calculate the total resistance of this circuit Homework Equations 1/rt =1/r1+1/r2+1/r3...etc - parallel RT=r1+r2+r3...etc - series The Attempt at a Solution 1/rt = 1/2 +1/2 +1/1 rt=1/2 then i tried adding 2 to it (from the top two resistors...

Okay I've figured out out now thankyou very much! :))

so are you suggesting that both answers are correct whether i write both pi and 2pi? as sin = 0 at both, how about cos its zero at pi/2 and 3pi/2 but in the book it sais pi aswell

Homework Statement This problem is probably quite simple for people who have covered this topic but the answer for part A is n=4k where k is any integer. Part B answer is n= 2+4k Look below for the working out and i will tell you what i don't understand Homework Equations de...

Okay i understand now so prety much just the simplest ones which i can evaluate using the unit circle or general knowledge, i was using my calculator to evaluate. I don't know why i said 11pi/12 and pi/12 must have read the question wrong. Thank you very much for your assistance it has helped...

yeyy! :)) does that come up a lot the use of trig in complex numbers? do you mind if i ask you another quick question? I know how to solve this following question but i don't know what radians to use for Why do they use 3pi/12 and 4pi/12, why not 11pi/12 and pi/12 ? they all add up to...

EDIT: sorry for edit, i did the question wrong again, but i found that cos(pi+x)=cos(pi-x)=-cosx and that sin(pi+x)=-sinx=sin(-x) my working out for C is... -z=-2cisx =-2cos(x)-isin(x) = 2cos(x)+isin(-x) =2cos(pi+x)+2isin(pi+x) = 2cis(pi+x) Ill attempt D and edit when I am done...

Hi guys, just before i ask this question i would like to let you know that i am a year 11 student, who has decided to study next years Specialist math (highest level of maths) course early to get a head start as i am nervous for next year(year 12.) :) Homework Statement and The first one...