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DegRad DegRad DegRad. x y Find the for all angles that are between 0 and 360 degrees (also in include the radian measurements From the chart we get that.

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Presentation on theme: "DegRad DegRad DegRad. x y Find the for all angles that are between 0 and 360 degrees (also in include the radian measurements From the chart we get that."— Presentation transcript:

1 DegRad DegRad DegRad

2 x y Find the for all angles that are between 0 and 360 degrees (also in include the radian measurements From the chart we get that 45 degrees has a tan = 1 tan is negative in the 2 nd and 4 th quadrants Place a reference angle of 45 degrees in the 2 nd quadrant

3 x y Find the for all angles that are between 0 and 360 degrees (also in include the radian measurements We also need to place a reference angle of 45 in the 4 th quadrant This would give us an angle of 315º (360 – 45) This question would have a final answer of 135º, 315º, radians, or radians

4 Law of Cosines – Finding a Missing Side A C B 80º Find side b in the following triangle 65º We need angle B (the angle between the sides) 180 – 80 – 65 = 35 35º

5 Law of Cosines – Finding a Missing Side C A B 75º Find missing side of the triangle, and then use the law of sines to find the missing angles 41.63

6 Law of Cosines – Finding a Missing Side C A B 75º Find missing side of the triangle, and then use the law of sines to find the missing angles We can now use law of sines to find one of the angles that is missing

7 Law of Cosines – Finding a Missing Side C A B 75º

8 Law of Cosines – Finding a Missing Side C A B 75º Now use this angle and the 75 that you were given in the beginning to find the 3 rd angle

9 x y Find the exact trig values for an angle of This angle has a terminal side in the 2 nd quadrant (because 5/4 = 1.2)

10 Finding Trig Values from an x-y coordinate x y Find the 6 trig functions for an angle which has terminal side passing through (-5, -3)


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