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7.3 Special Angles (45  & Quadrantal )

7.3 Special Angles (45  & Quadrantal ). Isosceles Right Triangle. 45 angles w/ hypotenuse = 1 2 sides are equal. 45 . 1. 45 . Memorize!!. Trig Values for 45  . SOH – CAH – TOA. Hyp. Opp. 45. Adj. reciprocals. Trig Values for 180  . x = -1. y = 0. r = 1. 180 .

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7.3 Special Angles (45  & Quadrantal )

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  1. 7.3 Special Angles(45 & Quadrantal)

  2. Isosceles Right Triangle 45 angles w/ hypotenuse = 1 2 sides are equal 45 1 45

  3. Memorize!! Trig Values for 45 SOH – CAH – TOA Hyp Opp 45 Adj reciprocals

  4. Trig Values for 180 x = -1 y = 0 r = 1 180 (-1, 0) reciprocals

  5. Quadrantal Angles 0, 90, 180, 270 90 (0, 1) 0 180 (1, 0) (-1, 0) (0, -1) 270

  6. Ex 1) Find the related angle of 237 y 237 180 x 237 – 180 = 57 (+) acute 270

  7. Find the exact values of the trig functions of 135 135 y Reference  for 135 is 45 135 is in QII, x is (–), y is (+) 45 x

  8. Homework #707 Pg. 407 41 – 50 all, 60, 64, 65 & Memorize 45 & Quadrantal Angle Trig Values

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