$ABCD$ એક લંબચોરસ છે જેમાં $AC$ એ વિકર્ણ છે. $(\tan^2 \angle CAD + 1) \sin^2 \angle BAC$ નું મૂલ્ય શોધો.

  • A
    $2$
  • B
    $\frac{1}{4}$
  • C
    $1$
  • D
    $0$

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