if sec a =cosec b = 13%12 then a+b is equal to
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secA=cosecB=13/12
secA=cosecB
secA=cosec (90-4)
A=90-4
2A=90
A=45
B=45 THE SAME WAY
A+B=45+45
=90 Degree
Answer is=90 Degree
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