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Q. |
## Mathematical equation for Involute is |

A. | x = a cos3 θ |

B. | x = r cosθ + r θ sinθ |

C. | x = (a+b)cosθ – a cos(a+b⁄a θ) |

D. | y = a(1-cosθ) |

Answer» B. x = r cosθ + r θ sinθ | |

Explanation: x= a cos3 Ɵ is equation for hypocycloid, x= (a+ b) cosƟ – a cos ( (a+b)/aƟ) is equation for epicycloid, y = a (1- cosƟ) is equation for cycloid and x = r cosƟ |

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