A straight line which makes an angle of with each of -axes, this line makes with -axis at an angle |
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a) |
b) |
c) |
d) |
A straight line which makes an angle of with each of -axes, this line makes with -axis at an angle |
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a) |
b) |
c) |
d) |
(d)
Clearly, where α is the angle which the straight line makes with -axis