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Solution 4.3:3b

From Förberedande kurs i matematik 1

Revision as of 10:51, 29 September 2008 by Ian (Talk | contribs)
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The angle v makes the same angle with the negative x -axis as the angle v makes with the positive x -axis and this means that v is the reflection of v in the y-axis.

Under such reflection, the angle's y -coordinate does not change (but the x -coordinate changes sign) and therefore sinv=sin v =a .