QUESTION
Asked by sonaisha
| 24th Nov, 2008,
08:59: PM
Expert Answer:
NUMERATOR = cos A cosecA -sinA secA
=cosA/ sin A - sinA / cos A
=(cos2A- sin2A ) / (cos A sinA ) = (cosA+sinA)(cosA-sinA) / (cos A sinA )
NUM / DEN = (cos A - sinA ) / (cos A sinA ) = cosecA - secA
Answered by
| 28th Nov, 2008,
02:30: PM
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