Plane and Spherical Trigonometry

a+ß acute angle altitude azimuth B₁ base C₁ C₂ celestial horizon celestial sphere check formula chord circle of latitude CIRCULAR FUNCTIONS circular measure colog complement cosc cosecant cotangent csc q ctn a ctn ctn q ctn² deduced denote distance ecliptic equal equator Example figures find the angle find the functions following angles formulas Geometry given angle horizon hypothenuse initial line less than 180 log csc log ctn log sin miles negative obtained OC"B perp perpendicular Plane Trig pole positive Prove quad quadrant radius right angle right ascension right triangles secant sin a sin sin² sine and cosine solution solve spherical triangle substituting TABLE OF LOGARITHMS tan² 45 tangent terminal line triangle of reference trigonometric functions vernal equinox ов ос