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What are the direction cosines of the y-axis? |
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Answer» To find : Direction cosines of the y- axis Formula used : If a line makes angles αo, βo and γo with the positive directions of x-axis, y-axis and z-axis respectively. then direction cosines are given by cos α, cos β, cos γ y-axis makes 90o with the x and z axes α = 90o, β = 0o and γ = 90o Direction cosines of the line is cos 90o, cos 0o, cos 90o 0, 1, 0 Direction cosines of the line is 0, 1 , 0 |
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