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Mathematics of Projections
Rotation (cont.)
We want the z-coordinate to be zero:
Solve:
Final result: 
, with 
.
What is the resulting x
-coordinate? Well
because cosines are positive for angles in this range, and 
. Similarly, 
is positive if c
is positive, and vice versa. So
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Mathematics of Projections - 09 MAY 95
Page 22 of 44
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