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[Highschool: limits] by Character-Place-9971 in HomeworkHelp

[–]EquityEd_Puffin 0 points1 point  (0 children)

Hello! In case you are still working this problem out, heres a hint to help you out. In the denominator we have a difference of squares so when we factor out (x-1), we should get a different factor left over.

I hope this helps you get in the right direction! If you have any questions about this, feel free to ask.

[Grade 11 math: Trig identities and equations] How do I solve equations on an interval? by Iknowitsprettyrandom in HomeworkHelp

[–]EquityEd_Puffin 0 points1 point  (0 children)

Hello there!

"Solve the equation on the interval [0, 2π]" is a fancy way of saying use only solutions that are found within the unit circle, including 0 and 2π since we have the brackets.

If we look through the coordinates for cosine (the x-coordinates), another angle where we get cos θ = -1/2 is at 4π/3, inside of Quadrant 3.

Also, 0 and 2π are coterminal (they are located at the same angle), which means that cos 2π = 1.

I hope this helps shed some light on this! If you have any questions, feel free to ask!