Fayette County Public Schools

9. 8.5(sin 20 ) LK; LK 2.91. 10. JK(tan 20 ) 2.91; JK 8. 11. 12. The sum of the interior angles of a triangle are 180, so 180 90 27 63 . 13. In a 45-45-90 triangle, the hypotenuse is times each leg. So, and QR 8.49. 14. TU SU 15. A Pythagorean triple is a set of 3 positive integers such that a2 b2 c2. 16. A Yes B Yes C No. 17. 18. To find sin x ... ................
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