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Published byNatalie Walker Modified over 4 years ago

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Deg Rad Deg Rad Deg Rad

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**From the chart we get that 45 degrees has a tan = 1**

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

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**We also need to place a reference angle of 45 in the 4th quadrant**

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

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**Law of Cosines – Finding a Missing Side**

Find side b in the following triangle 65º We need angle B (the angle between the sides) 180 – 80 – 65 = 35 23 C 80º 35º 34 B

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**Law of Cosines – Finding a Missing Side**

Find missing side of the triangle, and then use the law of sines to find the missing angles 14 75º 43 A 41.63 B

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**Law of Cosines – Finding a Missing Side**

Find missing side of the triangle, and then use the law of sines to find the missing angles 14 75º 43 A We can now use law of sines to find one of the angles that is missing 41.63 B

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**Law of Cosines – Finding a Missing Side**

14 75º 43 A 41.63 B

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**Law of Cosines – Finding a Missing Side**

Now use this angle and the 75 that you were given in the beginning to find the 3rd angle 14 75º 43 A 41.63 B

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**Find the exact trig values for an angle of **

This angle has a terminal side in the 2nd quadrant (because 5/4 = 1.2) y x

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**Finding Trig Values from an x-y coordinate**

Find the 6 trig functions for an angle which has terminal side passing through (-5, -3) y x

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