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If cosec 39°= x, the value of $$ {1\over {cosec^{2}{51°}}} +sin^{2} 39^{°}+tan^{2}{51^{°}}-{1\over {sin^{2}{51^{°}}}{Sec^{2}{39^{°}}}}$$ is-
5Q:
If cosec 39°= x, the value of $$ {1\over {cosec^{2}{51°}}} +sin^{2} 39^{°}+tan^{2}{51^{°}}-{1\over {sin^{2}{51^{°}}}{Sec^{2}{39^{°}}}}$$ is-
- 1$$ {\sqrt{x^{2}-1}}$$false
- 2$$ {\sqrt{1-x^{2}}}$$false
- 3$$ {x^{2}-1}$$true
- 4$$ {1-x^{2}}$$false
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