8-2 Additional Practice Trigonometric Ratios For Exercises 1-3, find sin A, cos A, and tan A. 1 . 1*6-71 2. 3. 6 SINA=16 - 2 45" 60 1 A COSA = 674 *2+6 = 92 TANAL For Exercises 4-9, find the value of x. Round to the nearest tenth. 4. tan48= 05. 6. 23 540 48 7. 37 3. 10 9. 25 6.5 47 10. Skylar drew two triangles that share a side and labeled the two portions of the base w and x. Then he solved for w and x as shown. Are his calculations correct? Explain. 5.5 sin 450 = 5.5 5.5 0 45 350 W = = sin 450 =7.8 W 5.5 sin 350 = w+x W + X = = 5.5 sin 35 ~ 9.6 X = 1.8 11. A wire makes a 70 angle with the ground and is attached to the top of a 50 ft antenna. How long XXXXXXXXXXXXXXXXX 50 ft is the wire? Round to the nearest foot. 70 enVision TM Geometry . Teaching Resources