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November 12th, 2012, 07:13 AM   #1
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Trigonometric Ratios

The tables, or calculator, clearly shows that or . Is the books answer incorrect or did I miss something?

Many thanks.

Q. Using Mathematics Tables, write down the solutions of the equation in the interval .

Attempt:

Ans.
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November 12th, 2012, 10:52 AM   #2
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Re: Trigonometric Ratios

Apparently, the book intended:

or

either that or the given solution is just wrong.
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November 12th, 2012, 10:56 AM   #3
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Re: Trigonometric Ratios

Thanks for clearing that up. Much obliged.
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