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7-1 Basic Trigonometric Identities Name_________________________ Use the given information to determine the exact trigonometric value. 6 , find tan 3 1. If cos = 1 , find csc 4 2. If cot = 3. If sin = 1 , find csc 2 4. If tan = 4, find sec 5. If csc = 5 , find cos 3 Express each value as a trigonometric function of an angle in Quadrant I. 6. cos 13 6 8. csc(-930°) 7. tan(-315°) 9. sin 10 9 Simplify each expression. 10. tan sin 11. cot tan + sin sec 12. (1 + sin )(1 - sin ) 13. cot x sin x csc x cos x 14. csc x – cos2 x csc x 15. tan x cos x sin x tan x sec x tan x