AIR MATH

Math Question

Given that \( \sin \theta=\frac{21}{29} \), what is the value of \( \cos \theta \), for \( 0^{\circ}<\theta<90^{\circ} \) ? \( -\sqrt{\frac{20}{29}} \) \( -\frac{20}{29} \) \( \frac{20}{29} \) \( \sqrt{\frac{20}{29}} \)

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