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we know that cosec^2 (theta)-cot^2 (theta)=1. Therefore [ cosec(theta)+cot(theta) ] - [ cosec (theta)-cot (theta ) ] =1 . then we get cosec( theta )-cot (theta )= 1/2 . therefore we get two equations and thus solving them we get cot (theta)=3/4 which is 0.75
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what is the value of 15÷5+8+9
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