Trigonometry

Asked by  | 16th Sep, 2009, 01:25: PM

Expert Answer:

(sin63/cos63)-(cos63/sin63)

=-(cos 63*cos63-sin63*sin63)/sin63cos63

=-2cos126/sin126

=-2cot126

the double angle formulae have been used here.

Answered by  | 6th Oct, 2009, 08:55: AM

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