Complex Number Mixed Review

Which are possible coordinates of the point graphed?

• (-2, 120^o)

• (-2, 60^o)

• (2, -120^o)

• (2, 60^o)

The rectangular form of the complex number 12(cos315^o + i sin315^o) is...

• 6√2 + 6√2 i

• 6√2 - 6√2 i

• -6√2 + 6√2 i

• -6√2 - 6√2 i

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

(5-2i) + (-7+8i)

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i

• A
• B
• C
• D

• A
• B
• C
• D

√-81

• 9i

• -9i

• -9

• 9

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

• 5+5i

• 5-5i

• 2-3i

• 5+7i

√-4

• -2

• -2i

• 2

• 2i