Q. 445.0( 5 Votes )

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Answer :

Formula: -


(i)


Given: -




A – B = 30°………eq(1)


And,




A + B = 60°………eq(2)


Adding both the equations(1) and (2) we get,


(A – B) + (A + B) = 30° + 60°


2 A = 90°


A = 45°


Putting the Value of A in equation (1) we get,


45° – B = 30°


B = 45°– 30°


B = 15°


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