If p=cosecβ q=cotβ then
1/p[(p+q)+1/(p+q)]=?
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1/cosec B[cosec B+cot B]+1/cosecB+cot B
1/cosecB [1+cosB/sinB+1/1+cosB/sinB]
1/1+cosB/sinB[1+sinB]
sinB/(1+cosB) (1+sinB)
1/cosecB [1+cosB/sinB+1/1+cosB/sinB]
1/1+cosB/sinB[1+sinB]
sinB/(1+cosB) (1+sinB)
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