Elements of Trigonometry: Plane and Spherical

angle less angle of depression angle of elevation angle opposite celestial equator celestial sphere circle circular measure colog comp cos(x+y cos² cos³ cosh cosx cosy cotangent Cotg cotx decimal ecliptic equal find the angles Find the area Find the distance Find the height formulas Hence hyperbolic functions hypotenuse initial line L.Tang latitude light-house log cot loge longitude mantissa meridian miles Napier's rules negative OBLIQUE TRIANGLES obtain perpendicular plane polar triangle pole positive Prove quadrantal triangle radians radius Required the distance Required the remaining right angle right ascension right spherical triangle right triangle roots of unity secant secx side opposite sin b sin sin³ sine and cosine sinh sinx siny solution spherical triangle ABC spherical trigonometry subtends an angle tanc Tang tangent tany terminal line tower TRIGONOMETRIC FUNCTIONS values ΙΟ ΙΟΙ فا