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Questions  >>  CBSE XII  >>  Math  >>  Model Papers
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Q)

Prove the following : \[ cos^{-1} \bigg( \frac{4}{5} \bigg)+ cos^{-1} \bigg( \frac{12}{13} \bigg)= cos^{-1} \bigg( \frac{33}{65} \bigg) \]

This question is Q.No.5 of misc. chapter 2

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