## Elements of Plane Trigonometry |

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acute angle algebraic signs angle for increase angle opposite angle YAX angular measure ANQLES assignable quantity B+cos Binomial Theorem Calculate CB calculate the distance calculate the remaining chains circular measure connecting rod Conventions of Algebraic cos2 cosC cosec cosine cotangent COTANQENTS Advanced Courtesy of Keuffel crank arm Degrees Minutes direct measurement distance and direction draw BH perpendicular equations EXAMPLES FOR PRACTICE feet formulas given Geometry given angle Gunter's Chain Hence hypotenuse included angle Increase in angle increase in ratio infinitesimal meas NATURAL SINES nx—sin oblique plane triangle obtuse angle obtuse triangles opposite direction opposite the greater plane triangle ABC Plane Trigonometry ratio for increase ratios of angular regarded as positive right plane triangle right side right triangle AHB sides and angles Similarly sin2 tangent x+z)—tan York City