Week5 Calculus - Section 7.1 2 Cosx 6.65 Cos x.65 Cots 1...

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Section 7.1 2. .65 ( ) .65 Cosx Cos x = - - = 6. 2 2 2 1 , 4 0 3 1 1 1 10 10 1 3 10 1 ( ) 3 9 3 10 Cots Quadrant Sin Cot Csc Csc Sin Sin Sin θ θ θ θ θ θ - = < + = = - + - = = = - 16. 2 2 1 1 , is in Q1, 5, 5 1 24 2 6 1 5 5 1 6 1 2 6 5 5 6 , 2 6( ) , 12 5 5 12 2 6 2 6 Cos Sec Tan Cot Sin Csc θ θ θ θ θ θ θ = = = = - = = = = = = = = 24. C 28. C 40. 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 (1 ) ( 1)( ) ( 1)( 1)( )( ) 1 1 1 1 1 1 ( 1)( 1)( )( ) ( 1)( ) 1 1 1 Cot Tan Csc Sec Csc Csc Sec Sec Sin Sin Cos Cos Sin Cos Sin Sin Cos Sin Sin Cos Cos Sin Cos Sin Cos Sin Cos Cos Sin Cos θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ θ + -• + - + - = - + - - - = 2 1 1 Sin Sin θ θ = =
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Section 7.2 2. 2 2 2 2 ( ) ( ) 1 ( ) ( ) ( ) Secx Cscx Sinx Cosx Sin x Cos x Cscx Secx Cosx Sinx Cosx Sinx Cosx Sinx Sin x Cos x Cscx Secx Cosx Sinx Cosx Sinx + = + = + + = = 18. 2 4 3 (4 3)( 1) Tan Tan Tan Tan β β β β + - = - + 26. 1 ( ) ( ) 1 Cott Tant Cott Cott = = 34. 1 Sin Tan Tan Sin Cos Sin Sin Cos Sec Sec Cos Cos α α α α α α α α α α α α = = = 44. 1, 1 Cos Cos Cos Cos Sin Cot Sin Cot Sin Sin θ θ θ θ θ θ θ θ θ θ = = = 60.
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