Illustrative Math Complex Numbers

Simplify:  (4+2i)/(3-i)

• 1-i

• 1+i

• 10+10i

• 1+10i

Tags

CCSS.HSN.CN.A.3

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

Tags

CCSS.HSN.CN.B.4

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

Tags

CCSS.HSN.CN.B.4

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

• √35

• √35 i

• √37

• 5i

Tags

CCSS.HSN.CN.B.6

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

Tags

CCSS.HSN.CN.B.4

Which are possible coordinates of the point graphed?

• (-2, 120^o)

• (-2, 60^o)

• (2, -120^o)

• (2, 60^o)

Tags

CCSS.HSN.CN.B.4

• A
• B
• C
• D

• A
• B
• C
• D

Tags

CCSS.HSN.CN.A.3

Simplify.

• -5i

• 5

• 5i

• -5