Coordinate angles of three dimensional vectors

[Tiven white]

Homework Statement

If u know the value of two coordinate angles there is an ulimeted amount of possibility for finding the third coordinate angle
A. True
B. False

Homework Equations

The Attempt at a Solution

I .not too sure about this one any suggestions would be appreciated I think its tfalse hough

 

[Chestermiller]

Homework Statement

If u know the value of two coordinate angles there is an ulimeted amount of possibility for finding the third coordinate angle
A. True
B. False

Homework Equations

The Attempt at a Solution

I .not too sure about this one any suggestions would be appreciated I think its tfalse hough

What is the sum of the squares of the three direction cosines equal to?

 

[Tiven white]

What is the sum of the squares of the three direction cosines equal to?

they sum to 1

 

[lendav_rott]

Two coordinate angles? Angles between vectors? I don't understand the question.

 

[Chestermiller]

they sum to 1

Does that help answer your question?

 

[haruspex]

they sum to 1

This approach works, but it might also help to think of it geometrically. What shape is formed by the set of lines at a given angle to the positive half of an axis?

 

[Tiven white]

Does that help answer your question?

I'm only confuse of the term unlimited I know there is the method of just subtracting the squared Cosine of the other angles from one to get the third though I'm unsure about the term unlimited since even though I know that's a method I Dont know if its the only method

 

[haruspex]

I'm only confuse of the term unlimited I know there is the method of just subtracting the squared Cosine of the other angles from one to get the third though I'm unsure about the term unlimited since even though I know that's a method I Dont know if its the only method

The question isn't asking about different methods of finding the answer; it's asking if the number of solution values is unlimited. You can use whatever method you like.

 

[Tiven white]

The question isn't asking about different methods of finding the answer; it's asking if the number of solution values is unlimited. You can use whatever method you like.

Its false right?

 

[haruspex]

Its false right?

Yes. How many possibilities are there for the third angle?