Q. 13.7( 3 Votes )

Write the value o

Answer :

Let ……………….1


Squaring both sides, we get


i2 = (a2-b2) +2aib


By comparing real and imaginary term, we get


2ab = 1 and a2-b2 = 0


By solving these we get



By putting value of a and b in 1, we get




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