en.wikipedia.org/wiki/Rotation_matrix

In linear algebra, a rotation matrix is a matrix that is used to perform a rotation in
Euclidean ... Since matrix multiplication **has** no effect on the zero vector (the
coordinates of .... so that it **does** not matter in which order **multiple** rotations are
performed. .... its **angle** — the **amount of** rotation about that axis (Euler rotation
theorem).

www.answers.com/Q/How_many_degrees_are_in_a_null_angle

Zero. **A null angle** is formed by two straight linesthat coincide. ... **How many**
**degrees do** supplementary angles **have**? It is 180 **degrees** I think. I was looking
for ...

www.answers.com/Q/A_null_angle_contains_how_many_degrees

**Null angles** is a term used in mathematics to describe the conceptbetween 2
different tangent directions at a ... **How many degrees does** a right angle **contain**?

www.mathopenref.com/angle.html

Definition of an **angle**. ... If we want to talk about the size, or measure, of the **angle**
in **degrees**, we should say ... However, **many** times we **will** see '∠ABC=34°'. ...
**angles have** some extra properties: They **can have** a measure greater than 360°,
...

www.harmonycentral.com/articles/what-you-need-to-know-about-microphone-polar-patterns

Nov 25, 2014 **...** If you **have** a SM58 or similar cardioid microphone, you **can** try it ... **Many**
microphones **have** a single, "fixed" pattern, while some ... Because they pick up
sound arriving from all **angles** equally well, they ... Bi-directional microphones
**have** the best rejection at the **null** points of any polar pattern - you **can get** ...

www.mathsisfun.com/geometry/straight-angle.html

A straight **angle** is 180 **degrees** ... A straight **angle** changes the direction to point
the opposite way. Sometimes people say "You **did** a complete 180 on that!

www.reddit.com/r/NoStupidQuestions/comments/5m5q7j/how_many_degrees_does_a_sphere_have

A **degree** is a 2d measurement that doesn't really apply to spheres. For a sphere
you **have** ... With a sphere you **will need** two **angles**. One that ...

math.stackexchange.com/questions/3679/what-is-the-direction-of-a-zero-null-vector

Aug 31, 2010 **...** The zero vector **has** no particular direction; this is consistent with the fact ... In
particular, Rn∖0 **does** not **have** the same homotopy as Rn -- i.e., ...

www.phys.hawaii.edu/~anita/new/papers/militaryHandbook/antennas.pdf

5. Antenna with a 20 **degree** beamwidth **has** a 20 dB gain. 6. 3 dB beamwidth is
approximately equal to the **angle** from the peak of the power to the first **null** (see ...