(One or more than one correct option) If \( 2 x-y+1=0 \) is a tange...

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(One or more than one correct option)
If \( 2 x-y+1=0 \) is a tangent to the hyperbola \( \frac{x^{2}}{a^{2}}-\frac{y^{2}}{16}=1 \)
P then which of the following CANNO'T be sides of a right

WV angled triangle?
(2017 Adv.)
(a) \( a, 4,1 \)
(b) \( 2 a, 4,1 \)
(c) \( a, 4,2 \)
(d) \( 2 a, 8,1 \)
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