cos theta+sin theta =m, sec theta+cosec theta =n find n(m2-1)
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=( sec theta+ cosec theta) ( (cos theta+sin theta)^2-1)
=1/cos@ +1/sin@((cos^2@+sin^@+2sin@cos@)-1)
=(1/cos@+1/sin@)([email protected]@-1)
=2 sin@ + 2 cos@
2m
=1/cos@ +1/sin@((cos^2@+sin^@+2sin@cos@)-1)
=(1/cos@+1/sin@)([email protected]@-1)
=2 sin@ + 2 cos@
2m
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