" (ii) "(8)/(7)

Express the following in the form a+bi (8+7i) (8-7i)

Compute the following : (9!-8!)/(7!) .

If theta is an acute angle such that tan^2theta=8/7 , then the value of ((1+sintheta)(1-sintheta))/((1+costheta)(1-costheta) is (a) 7/8 (b) 8/7 (c) 7/4 (d) (64)/(49)

Which of the following is greater? (7)/(8)*(6)/(7)

If (7a + 8b)/( 7c + 8d) = (7a - 8b)/(7c - 8d), prove that : a:b= c:d

by how much does (6)/((7)/(8)) exceeds ((6)/(7))/(8)