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Math Help - Ti-nspire cas trig equations

  1. #1
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    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!
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    Re: Ti-nspire cas trig equations

    Quote Originally Posted by noork85 View Post
    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 cos^2(x) is written as [cos(x)]^2.
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    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.
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    Re: Ti-nspire cas trig equations

    Quote Originally Posted by noork85 View Post
    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?
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  5. #5
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    Re: Ti-nspire cas trig equations

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

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

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

    sub in the given vertex coordinates (h,k) and the coordinates of the given point (x,y) ... solve for 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.
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  7. #7
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    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.
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    Re: Ti-nspire cas trig equations

    Quote Originally Posted by noork85 View Post
    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?
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  9. #9
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    Re: Ti-nspire cas trig equations

    Yes, and its all very confusing.
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  10. #10
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    Re: Ti-nspire cas trig equations

    Do u have a ti-nspire cas calc?
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  11. #11
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    Re: Ti-nspire cas trig equations

    no
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