# mathematics

evaluate each of the following..sin 130.tan 60/cos 540.tan 230.sin 400

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1. just plug the numbers into your favorite calculator. What's the trouble?

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2. or, reduce to

(sin 50)(tan 60) / (cos 180)(tan 50)(sin 40)
= (cos 40)(cot 30) / -(cot 40)(sin 40)
= -cot 30
= -âˆš3

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3. Huh. Strange font messup
that's -√3

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4. sin 130.tan 60/cos 540.tan 230.sin 400

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