જો $\sin \alpha = \frac{1}{2}$ અને $\cos \beta = \frac{1}{2}$ હોય,તો $(\alpha + \beta)$ નું મૂલ્ય શું થાય ($^{\circ}$ માં)?
- A$0$
- B$90$
- C$30$
- D$60$
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