Vectors at 90 degrees

Find the magnitude of a vector using ...

• Sine & Cosine
• Inverse Tangent
• Pythagorean Theorem
• Multiplication

Tags

CCSS.HSN.VM.A.1

If you know the length of two vectors at 90 degrees, you can find the angle by  ...

• using the Pythagorean Theorem
• finding the Inverse Tangent of the ratio of the sides
• Adding the lengths of each side
• you can't find the angle if you know the length of only two sides

The Pythagorean Theorem states that you can find Length of the Hypotenuse of a right triangle by finding the ...

• square root of the sum of the squares of the other two sides
• sum of the squares of the other two sides
• sum of the other two sides
• Inverse Tangent of the ratio of the other two sides

One way to write the Pythagorean Theorem is ... 

• a + b = c
• a² + b² = c
• a² + b² = c²
• a² * b² = c²

On a compass, North is at what angle (bearing)?

• 0
• 90
• 180
• 270

For standard angles (not compass bearing), which direction is 0 degrees?

• North
• South
• East
• West