46. cotA= cosec A +1
46.
cot A+ cosec A-1
cot A-- cosec A+1=
1+cos A
sin A
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Step-by-step explanation:
cotA+cosecA-1/cotA-cosecA+1
=(cosecA+cotA)-(cosec²A-cot²A)/(cotA-cosecA+1)
=(cosecA+cotA)(1-cosecA+cotA)/(cotA-cosecA+1)
=cosecA+cotA
=1+cosA/sinA
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