math
OHHH, I forgot my chart, so x = pi/3 and 5pi/3 :) thank you very much!
math
yeah, right after I read understood the first no solution, i figured the second was no solution =] my answers for number 3 are wrong, but I don't understand why
math
thanks for explaining #1 :) whoops, I posted the question wrong, its 2sin^2 + sinx -6 = 0
math
solve each equation for 0=/<x=/<2pi sin^2x + 5sinx + 6 = 0? how do i factor this and solve? 2sin^2 + sinx = 0 (2sinx - 3)(sinx +2) sinx = 3/2, -2 how do I solve? These are not part of the special triangles. 2cos^2 - 7cosx + 3 = 0 (2cosx - 1)(cosx - 3) cosx = 1/2, 3 x= pi...
math
you move the x over 2x+6=-10 then move the 6 over 2x=-16 x=-8
math
I just learnt to find the intersections of these 2 equations on a graphing calc. and then write the general solution based on the intersections.
math
hmm.. how did you get cos((pi/2)x)cos(pi/2) - sin((pi/2)x)sin(pi/2) = cos (pi/2)x also, do you have to solve for tan?
math
Solve each equation , then write the general solution cos(pi/2(x+1))=cospi/2 x x=1.5, 3.5 general solution: 1/2+4n but the back of the book says that the general solution is 1/2+2n isn't the period 4?
chemistry
Thanks for the explanation. :)
chemistry
What evidence suggests the carbon-carbon bonds in benzene are different from bonds in alkanes and alkenes? Currently, I have 2 thoughts on this. I'm not quite sure which one is right (or both wrong) the ratio of carbon to hydrogen is 1:3 or 1:4, inbetween alkanes and alken...
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