Answer :

Let the third side be p,

By Pythagoras theorem,

⇒ 9^{2} + p^{2} = 15^{2}

⇒ 81 + p^{2} = 225

⇒ p^{2} = 144

⇒ p = 12

Therefore, the other angles are:

cos A =

tan A =

cosec A =

sec A =

cot A =

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