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Warm- up

Warm- up . What do you remember about right triangles?. Trigonometry. Basic Right Triangles. Three basic trigonometric functions . Sine Cosine Tangent. Trigonometric functions describe relationships between the angles of a right triangle and its sides.

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Warm- up

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  1. Warm- up What do you remember about right triangles?

  2. Trigonometry Basic Right Triangles

  3. Three basic trigonometric functions • Sine • Cosine • Tangent

  4. Trigonometric functions describe relationships between the angles of a right triangle and its sides.

  5. Some quick notes you need to know: • We only use these trig functions on right triangles • We only use the acute angles in the right triangles • is a Greek letter called theta (thay-ta) it is used a lot in trig to stand for an angle. its just like a variable like x. • You must round all answers in this unit to the nearest tenth.

  6. Some quick notes you need to know: • Always draw a diagram if its not provided. (yes this is required) • We measure our angles in degrees so your calculator must be in degree mode.(calc steps: press “mode” scroll down to “radian” and over to “degree” and press “enter” so that the word degree is high lighted, then “clear” to exit)

  7. Right Triangles Hypotenuse Adjacent Leg Opposite Leg

  8. SOH CAH TOA!!!!!!! SOME OLD HIPPIE CAUGHT ANOTHER HIPPIE TRIPPING ON ACID

  9. SOME OLD HIPPIE…

  10. CAUGHT ANOTHER HIPPIE…

  11. TRIPPING ON ACID…

  12. Find the value of x in each triangle *We are looking for sides so sin, cos, tan* Hypotenuse Opposite 20 x 38° Adjacent

  13. Find the value of x in each triangle *We are looking for sides so sin, cos, tan* adjacent 15 51° opposite x hypotenuse

  14. Find the value of x in each triangle *We are looking for sides so sin, cos, tan* hypotenuse 28° x 19 adjacent opposite

  15. Find the value of in each triangle *We are looking for angles so sin-1, cos-1, tan-1* hypotenuse 25 opposite 17 adjacent

  16. Find the value of in each triangle *We are looking for angles so sin-1, cos-1, tan-1* 12 adjacent 18 opposite hypotenuse

  17. Find the value of in each triangle *We are looking for angles so sin-1, cos-1, tan-1* 15 adjacent 29 opposite hypotenuse

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