Assume the lines that appear tangent are tangent. Find the value of each variable. Use extra sheets of paper for the solutions and answers. 1720 68° 1. 6. co 64. (ре 57 75° 2. 7. 1280 190 43° 3. 520 168/ 8. 100 be 9. 112° 115° C 100° 10. k mº 79 1400 381