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Warm up Monday May 12

Which equation has exactly one real solution. Warm up Monday May 12. A 4x^2 –12x–9=0 B 4x^2 +12x+9=0 C 4x^2 –6x–9=0 D 4x^2 +6x+9=0. Review of Right triangles packet from friday ?. So today we are going to review law of sines and cosines briefly and then we have other things to do.

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Warm up Monday May 12

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  1. Which equation has exactly one real solution Warm upMonday May 12 A 4x^2 –12x–9=0 B 4x^2 +12x+9=0 C 4x^2 –6x–9=0 D 4x^2 +6x+9=0

  2. Review of Right triangles packet from friday? So today we are going to review law of sines and cosines briefly and then we have other things to do.

  3. What exactly does a trigonometric function look like?

  4. Easy way to tell a difference... Sine looks like a mountain and a valley. Cosine looks like a smile. There are some things you need to know about their graphs! Amplitude Period Vertical shift Phase shift http://www.purplemath.com/modules/grphtrig.htm

  5. For F(t) = Af(Bt – C) + D, where f(t) is one of the basic trig functions, we have: A: amplitude is A B: period is (360)/|B| C: phase shift is C/B D: vertical shift is D http://www.khanacademy.org/math/trigonometry/basic-trigonometry/trig_graphs_tutorial/v/we-amplitude-and-period

  6. Homework is worksheet on law of sines, law of cosines, and graphing Tomorrow we will review all triangle “stuff” with jeopardy.

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