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प्रश्न
Choose the correct alternative:
A vector makes equal angle with the positive direction of the coordinate axes. Then each angle is equal to
पर्याय
`cos^-1 (1/3)`
`cos^-1 (2/3)`
`cos^-1 (1/sqrt3)`
`cos^-1 (2/sqrt3)`
उत्तर
`cos^-1 (1/sqrt3)`
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