4+ tan SQ x - sec sq x /cosec sq x 4 + tan sq x - 1/cos sq x/1/SIN sq x4 + tan sq x - sin sq x/cos sq x4 + tan sq x - tan sq x = 4 (Sin sq x/Cos sq x = Tan sq x)Therefore 4+ tan sq x - sec SQX /cosec sq x = 4
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