Because this is a pre-calc class I hope we all know how to solve equations using algerbra, ya know.
Factoring quadratics
What ever you do to one side do to the other
When you take a square root dont forget the + or -
Factoring the sum and difference of Cubes
Just Simple Algerbra Stuff.
There are some exceptions though.
The D: is almost always [0,2pi).
Dont Forget you can substitue using Trig Identities.
Just like you CANT divide by a square root you CANT divide by a trig function. Just take the inverse
You still shouldnt divide by a varrible. factor it instead.
Some easy hints.
Change all of the Trig functions to the same thing such as (sin) or (cos)
treat the Function as the varrible I.E. c=constant Tan(x) or tan(x-c)=just "X"
UNTILL youve finished isolating the varrible then take the inverse.
All of the identities are on the post before mine if you need them.
Every problem starts COmplex and can be reduced down to something simple. dont give up
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