Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of tan 75 degree and tan 90 degree by taking suitable values of A and B.
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If `A+B=90^(@)` then prove that `1+(tanA)/(tanB)=sec^(2)A.`
Given that tan (A+B)= tanA + tanB/ 1-tanA.tanB , find the value of tan 75 degree and tan 90 degree by taking
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