MCQ
આકૃતિમાં $\angle AOB =90^{\circ}$ અને $\angle ABC =30^{\circ}$ હોય, તો $\angle CAO =$ _______.


- A30$^{\circ} $
- B45$^{\circ} $
- C90$^{\circ} $
- ✓60$^{\circ} $

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