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Example 2 - If a line has direction ratios 2, -1, 2, direction cosines
Example 2 If a line has direction ratios 2, – 1, – 2, determine its direction cosines.If direction ratios of a line are a, b, cdirection cosines are 𝒂/√(𝒂^𝟐 𝒃^𝟐 𝒄^𝟐 ) , 𝒃/√(𝒂^𝟐 𝒃^𝟐 𝒄^𝟐 ) , 𝒄/√(𝒂^𝟐 𝒃^𝟐 𝒄^𝟐 ) Given,Direction ratios = 2, −1, −2∴ 𝑎 = 2, b = −1, c = −2
Dec 16, 2024
Direction Cosines Explained
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storyofmathematics.com
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