Easy Complex Numbers

The product of the following complex number in polar form √5(cos130^o + i sin130^o) ⋅ √45(cos15^o + i sin15^o) is...

• 50(cos145^o + i sin145^o)

• 15(cos145^o + i sin145^o)

• 81(cos100^o + i sin100^o)

• All Options are Correct

The distance between z=4-3i and w=-2-4i on the complex plane is...

• √35

• √35 i

• √37

• 5i

Let w=-√3/2 + 1/2 i calculate the modulus and argument.

• 3, 120^o

• 5, 270^o

• 1, 150^o

• Not Possible

If z=√2+√2 i then arg(z²)=

• 0^o

• 60^o

• 90^o

• Not Possible

Find the product
(1+3i)(2-i)

• 5+5i

• 5-5i

• 2-3i

• 5+7i

• A
• B
• C
• D

• A
• B
• C
• D

• 10
• -10
• 10i
• -10i

(6+i)(-3+6i)

• 3+7i

• -18+6i

• -24+6i

• -18+12i

4+5i+6+6i

• 21i

• 20i+36

• 24+30i

• 10+11i