Question

would i be correct?!
Find the solution set of the given equation for 0 ≤ x ≤ 2π.

-5 - 2cosx = -6


{pi,2pi/3}
{pi,5pi/3} <<< i chose this (:

Answer 1

yup, correct :)

Answer 2

@hartnn how about for this one??

Find the solution set of the given equation for 0 ≤ x ≤ 2π.

-tanA = -1

{pi/4,3pi/4 } <<??
{pi/4,5pi/4 }
{3pi/4,5pi/4 }
{3pi/4,7pi/4 }

Answer 3

nopes,
tan pi/4 =1
but tan 3pi/4 is not 1

Answer 4

then it would be pi/4, and 5pi/4 perhaps?

Answer 5

yup!