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.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2Do you know what's the identity for sin2x?

hannahg
 one year ago
Best ResponseYou've already chosen the best response.02sinx+cosx+sinx=0 right? what do i do next?

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2no, it should be from sin2x + sin x = 0 to 2sinxcosx + sin x =0 right?

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2you should try factoring now

hannahg
 one year ago
Best ResponseYou've already chosen the best response.0sinx(2cosx+1)=0 is this right? what do i do next? o.O

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2yes, now you can let sinx=0 and 2cosx+1=0 then find the x values

AravindG
 one year ago
Best ResponseYou've already chosen the best response.1equate that to 0 and find x values

hannahg
 one year ago
Best ResponseYou've already chosen the best response.0so i got cosx=1/2 how do i find the value of x?

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2well you can do this cosx=1/2 x=cos^{1} (1/2)

hannahg
 one year ago
Best ResponseYou've already chosen the best response.0so what are all possible values of x? 0 and......what else O.o

AravindG
 one year ago
Best ResponseYou've already chosen the best response.1@hannahg :) instead of o.O

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2you calculate cos^(1) 1/2 first without minus on half you'll get 60 degrees

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2then use this chart for cosine dw:1358873950517:dw we are looking at the minus side since we got minus half. then 18060=120 degrees 180+60=240 degrees

AravindG
 one year ago
Best ResponseYou've already chosen the best response.1@hannahg thats better :)

hannahg
 one year ago
Best ResponseYou've already chosen the best response.0yes. so all the possible solutions will be pi, pi/3, 2pi/3?

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2you still have sinx=0 to do

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2yes but dont forget about 180

.Sam.
 one year ago
Best ResponseYou've already chosen the best response.2since theta is 0, then you get 180

hannahg
 one year ago
Best ResponseYou've already chosen the best response.0@.Sam. so what are all solutions in the interval??
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