# Thread: Ti-nspire cas trig equations

1. ## Ti-nspire cas trig equations

How do i solve trig equations on this? And also factoring.

It seems the calc doesnt recignie cos^2_x keeps saying missing (

I want to factor and solve for x by putting in cot x cos^2x-2cot x

How do i put it in?

Thanks!

2. ## Re: Ti-nspire cas trig equations

Originally Posted by noork85
How do i solve trig equations on this? And also factoring.

It seems the calc doesnt recignie cos^2_x keeps saying missing (

I want to factor and solve for x by putting in cot x cos^2x-2cot x
With most CAS $\displaystyle cos^2(x)$ is written as $\displaystyle [cos(x)]^2.$

3. ## Re: Ti-nspire cas trig equations

Thank u so much!

Also, how would i graph if im given,

Vertex (4,-1); point (2,3)

I know how to graph but smetimes i messup with signs and i screw up the whole graph.

4. ## Re: Ti-nspire cas trig equations

Originally Posted by noork85
Thank u so much!

Also, how would i graph if im given,

Vertex (4,-1); point (2,3)

I know how to graph but smetimes i messup with signs and i screw up the whole graph.
is the graph a parabola?

Yes.

6. ## Re: Ti-nspire cas trig equations

you should be familiar with the vertex form of a parabola ...

$\displaystyle y = a(x-h)^2 + k$

sub in the given vertex coordinates $\displaystyle (h,k)$ and the coordinates of the given point $\displaystyle (x,y)$ ... solve for $\displaystyle a$ , then graph.

btw ... next time state what you are graphing. if you had not mentioned a vertex, I would've had no idea what you wanted graphed in the first place.

7. ## Re: Ti-nspire cas trig equations

Yes, i realized that, sorry.

I know how to graph on paper, i just wanted to know how to graph on the calc so i can verify my ans.

Thanks.

8. ## Re: Ti-nspire cas trig equations

Originally Posted by noork85
Yes, i realized that, sorry.

I know how to graph on paper, i just wanted to know how to graph on the calc so i can verify my ans.

Thanks.
have you taken a look at the owner's manual?

9. ## Re: Ti-nspire cas trig equations

Yes, and its all very confusing.

10. ## Re: Ti-nspire cas trig equations

Do u have a ti-nspire cas calc?

no

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