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If z1 and z2 are two non-zero complex numbers such that |z1 + z2| = |z1| + |z2| then arg (z1) - arg (z2 ) is equal to

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If z1 and z2 are two non-zero complex numbers such that |z1 + z2| = |z1| + |z2| then arg (z1) - arg (z2 ) is equal to

(a) - pi/2

(b) 0

(c) - pi

(d) pi/2

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1 Answer

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Best answer

Correct option (b) 0

Explanation:

Again squaring, we get

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