Question

Find the modulus of z = cos 60 +i sin30

(a)1+2i (b) 1+i(b) 2 +1i, (d) none of these​

Answer 1

Answer:

d)none of these.........

Answer 2

If z = cos 60 + i sin 30

then,

z = 1/2 + i × 1/2

So, z = 1/2 + i/2

Meaning of modulus is Absolute value

So, Modulus of z is 1/2(1 + i)

Therefore

the answer is (d) none of these