Use a Calculator to Find an Approximate Value of Each $\tan ^ { - 1 } ( 2 )$

question 61

Essay

Use a calculator to find an approximate value of each expression correct to five decimal places, if it is defined.
(a)
$\tan ^ { - 1 } ( 2 )$
(b)
$\cos ^ { - 1 } ( 2 )$

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Definitions:

Ad Hoc

A term describing solutions designed for a specific problem or task, without considering wider application.

Comparative

Relating to or involving the comparison of two or more entities to assess their similarities and differences.

Key Indicator

A quantitative metric that provides insight into the performance, health, or progress of a process, operation, or system.

SAP

Systems, Applications & Products in Data Processing, a European multinational software corporation that makes enterprise software to manage business operations and customer relations.