If cosec 39° = x, then the value of {1}/{cosec^{2}\:51^{ \circ }} + \sin ^{2}⁡39^{ \circ } + \tan ^{2}⁡51^{ \circ }− {1}/{ \sin ^{2}⁡51^{ \circ } \sec ^{2}⁡39^{ \circ }} is:

SSC CGL Tier II Quant 18 Nov 2020 Paper

Question : 60 of 100

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If cosec 39° = x, then the value of

\;{1}/{cosec^{2}\:51^{ ∘ }} + sin \;^{2}⁡39^{ ∘ } + \tan ^{2}⁡51^{ ∘ }−\;{1}/{\ sin\;^{2}⁡51^{ ∘ }\ sec ^{2}⁡39^{ ∘ }}

is:

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