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Trigonometric Identities 1. Simplify each trigonometric expression by following the indicated direction (Similar to p.215 #9-10) Rewrite in terms of sine and cosine functions: sec csc 2. Simplify each trigonometric expression by following the indicated direction (Similar to p.215 #11-12) Multiply: tan 1 sec 1 sec 1 sec 3. Simplify each trigonometric expression by following the indicated direction (Similar to p.215 #13-14) Rewrite over a common denominator: 1 1 1 sin 1 sin 4. Simplify each trigonometric expression by following the indicated direction (Similar to p.215 #17-18) Factor and Simplify: 2 sin 7 sin 5 2 3 sin 2 sin 1 2 5. Establish each identity (Similar to p.216 #19-98) cot x sin x cos x 6. Establish each identity (Similar to p.216 #19-98) 2 cos x sin x csc x sin x 7. Establish each identity (Similar to p.216 #19-98) (1 sin x)(1 tan x) 1 2 2 8. Establish each identity (Similar to p.216 #19-98) 3 cos x 2 cos x 1 1 3 cos x 2 sin x cos x 1 2 9. Establish each identity (Similar to p.216 #19-98) 1 cos x 2 cos x 2 sec x 1 2 10. Establish each identity (Similar to p.216 #19-98) tan x 1 cos x sec x 1 cos x 2 11. Establish each identity (Similar to p.216 #19-98) tan x sin x sec x 1 tan x sin x sec x 1 12. Establish each identity (Similar to p.216 #19-98) tan x sin x tan x sin x 2 2 2 2 13. Establish each identity (Similar to p.216 #19-98) 2 cos x csc x sin x sin x 2 14. Establish each identity (Similar to p.216 #19-98) 1 sec x tan x sec x tan x 15. Establish each identity (Similar to p.216 #19-98) NEXT TIME sin x 1 cos x 2 csc x 1 cos x sin x 16. Establish each identity (Similar to p.216 #19-98) 1 1 2 2 csc x 1 cos x 1 cos x 17. Establish each identity (Similar to p.216 #19-98) cot x sec x 2 2 csc x csc x sec x sin x cos x 18. Establish each identity (Similar to p.216 #19-98) csc x 1 tan x 2 csc( x) cos x 2