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The Trigonometric Functions we will be looking at

The Trigonometric Functions we will be looking at. SINE. COSINE. TANGENT. The Trigonometric Functions. SIN E. COS INE. TAN GENT. SIN E. Prounounced “sign”. COS INE. Prounounced “co-sign”. TAN GENT. Prounounced “tan-gent”. Greek Letter q . Prounounced “theta”.

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The Trigonometric Functions we will be looking at

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  1. The Trigonometric Functions we will be looking at SINE COSINE TANGENT

  2. The Trigonometric Functions SINE COSINE TANGENT

  3. SINE Prounounced “sign”

  4. COSINE Prounounced “co-sign”

  5. TANGENT Prounounced “tan-gent”

  6. Greek Letter q Prounounced “theta” Represents an unknown angle

  7. hypotenuse hypotenuse opposite opposite adjacent adjacent

  8. We need a way to remember all of these ratios…

  9. Some Old Hippie Came A Hoppin’ Through Our Old Hippie Apartment

  10. Sin SOHCAHTOA Opp Hyp Cos Adj Hyp Tan Opp Adj Old Hippie

  11. Finding sine, cosine, and tangent ratios

  12. SOHCAHTOA 10 8 6

  13. Find the sine, the cosine, and the tangent of angle A. Give a fraction and decimal answer (round to 4 places). 10.8 9 A 6

  14. Find the values of the three trigonometric functions of . ? Pythagorean Theorem: 5 4 (3)² + (4)² = c² 5 = c 3

  15. Find the sine, the cosine, and the tangent of angle A Give a fraction and decimal answer (round to 4 decimal places). B 24.5 8.2 A 23.1

  16. Finding a missing sideusing sine, cosine or tangent

  17. A surveyor is standing 50 feet from the base of a large tree. The surveyor measures the angle of elevation to the top of the tree as 71.5°. How tall is the tree? tan 71.5° ? tan 71.5° 71.5° y = 50 (tan 71.5°) 50 y = 50 (2.98868)

  18. Ex. A person is 200 yards from a river. Rather than walk directly to the river, the person walks along a straight path to the river’s edge at a 60° angle. How far must the person walk to reach the river’s edge? cos 60° x (cos 60°) = 200 200 60° x x X = 400 yards

  19. HOMEWORK: 2 worksheets

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