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"(11) Evalute each of following using suitable identities : \\( ( 104 ) ^ { 3 } \\)\n(12) If the point \\( ( 3,4 ) \\) lies on the graph of equation \\( 3 y = a x + 7 , \\) find the value of a.\n(13) \\( \\angle A \\) and \\( \\angle B \\) are supplementary angles. It \\( \\angle A = x + 10 ^ { \\circ } \\) and \\( \\angle B = x - 10 ^ { \\circ } , \\) find the angles \\( \\angle A \\) and"

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