a. What is the geometrical significance of iz-(2 + 3i), if z = x+iy b....

a. What is the geometrical significance of iz-(2 + 3i), if z = x+iy

b. Prove 1- tan^2A/1+tan^2A = 2 cos^2θ-1
c. If x be so small that x^2 and higher powers of x may be neglected, find the value of (8 + 3x)^2/3
(1+2x) square root of 4-7x?

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