Unit 9 Corrective Assignment.pdf

Unit 9 Corrective Assignment.pdf - Precalculus Exam 9...

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Precalculus Exam 9 Corrective Assignment Spring 2016 Objective 17: Proving Identities Algebraically Prove that the equation is an identity using substitution and algebra. Show each step. 1. 2 1 tan tan cot x x x 2.  2 1 cos 1 cos sin 3. 2 cos csc sec cot x x x x 4. 2 1 cos cot sin cos 5. tan csc cos 1 6. csc cos tan cos sin x x x x x 7. cot tan sin cos csc x x x x x 8. cos 1 sin 1 sin cos x x x x 9. ) sec( ) csc( ) tan( ) cot( x x x x 10. x x x x x x 2 sin cos ) tan cos (cot sin 11. x x x x tan sin cos cos 1 12. x x x x 2 cos ) sin (csc sin 13. 2 1 cos 2 sin 2 tan sec 2 2 2 2 x x x x 14. x x x x x 2 2 2 2 2 sec csc sin sec sin Objective 18: Solving Oblique Triangles. Directions: For each question, you must show the equations you used with the numbers substituted in to receive full credit. Round all answers to the nearest hundredth but not until your final answer to avoid round-off error.
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