Inverse Functions

sin 9⁰ = .156434465 The sine's inverse is sin^-1(.15634465) = 9⁰

cos 15⁰ = .965925826 The cosine's inverse is cos^-1(.965925826) = 15⁰

1. What does the cos(cos^-1(.913545458)) = (study the above material before checking the answer)   answer
   
   
2. What does the sin(sin^-1(.731353702)) = (study the last problem before checking the answer)   answer
   
   
3. What does the cos(sin^-1(.731353702)) = (study the last problem before checking the answer)   answer
   
   
4. What does the tan(tan^-1(.731353702)= (Notice that the #.731353702 is the same as in the above problem # 2 and #3.)
   
   • Will the angle be the same as #2 ?   
   • Why?
   answer
   
   
   • Is there any angle (x) greater than zero in a right triangle for which the sin(x) = tan(x) or cos (x) = tan (x) ?  Why?
   answer
   
   
5. What does the cos(cos^-1(.732353702)) = answer
   
   
6. What does the cos(sin^-1(.658953702)) = answer
   
   

    

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