 # 8 2 Trigonometric Ratios Trigonometric Ratios Trigonometric Ratios

• Slides: 12 8. 2 Trigonometric Ratios Trigonometric Ratios �Trigonometric Ratios- is a ratio of two sides of a right triangle. Trigonometric Ratios Examples: Write the trigonometric ratio as a fraction and as a decimal rounded to the nearest hundredth. 1) a) b) c) sin J cos J tan K Examples: Write the trigonometric ratio as a fraction and as a decimal rounded to the nearest hundredth. 2) a) b) c) cos A tan B sin B Examples: 3) Use your calculator to find each trigonometric ratio. Round to the nearest hundredth. a) sin 52° b) cos 19° c) tan 65° d) tan 11° e) sin 62° Examples: Find each length. Round to the nearest hundredth. 4) a) BC b) QR Examples: Find each length. Round to the nearest hundredth. 5) a) FD b) DF Examples: Find each length. Round to the nearest hundredth. 6) a) ST b) BC Examples: Find each length. Round to the nearest hundredth. 7) a) JL b) CB and AC 8) Examples: Find AC, the length of the ramp, to the nearest hundredth of a foot. Angle C= 4. 8 o, AB=1. 2 ft 9) Examples: The Pilatusbahn in Switzerland is the world’s steepest cog railway. Its steepest section makes an angle of about 25. 6º with the horizontal and rises about 0. 9 km. To the nearest hundredth of a kilometer, how long is this section of the railway track? 0. 9 km