Question

csc^2x+2cscx=0

Answer 1

what's csc?

Answer 2

its the abbreviation for cosec

so looking at the problem you have a quadratic equation... factoring and you get

csc(x)(csc(x) + 2) = 0

so you need to find the values of x where

csc(x) = 0

and

csc(x) = 2

I think one of the solutions doesn't exist..

hope it helps

Answer 3

Solve the given equation over the interval [0, 2π): cos2 x = cos x.
a)3pi/2
b)pi/2
c)2pi
d)0
sorry didn't write out problem

Answer 4

^different problem lol

Answer 5

is it

cos(2x) or cos^2(2x)

Answer 6

cos^2(x)=cos(x)

Answer 7

but it looks like another quadratic

rewriting it and you get

\[\cos^2(x) - \cos(x) =0\]

factoring and you get

cos(x)(cos(x) - 1) = 0

so just solve for x again

Answer 8

k thanks