Geometry Warm-Up 2/6/12 The perimeter of a square is 20 inches. Find the length of a side on the square and the diagonal.

8-4: Trigonometry Geometry February 6, 2012

Trigonometry Trigonometry – study of triangle measurement 3 Common Trig Ratios Sine (sin) Cosine (cos) Tangent (tan)

Trig Ratios The 3 trig ratios are all in reference to a specific angle. A x z B C y

Example 1 Find sin L, cos L, tan L, sin N, cos N, and tan N. Express each ratio as a fraction and as a decimal.

“Gettin’ Triggy Wit It”