The naval architect's and shipbuilder's pocket-book of formulae, rules, and tables and marine engineer's and surveyor's handy book of reference (1884)
Mackrow, Clement · London, C. Lockwood and co. · leaf 29
ndthe curve obtained by setting off the same lengths under theasymptote is called the inferior conchoid. C2 20 TEIGONOMETRICAL RATIOS. TKIGONOMETRY. The complement of an angle is its defect from a right angle;tluis if A denote the number of degrees contained in any angle,90^ — A is the number of… … Trigonometrical Ratios. All the different functions of anangle, or of the arc subtending thatanofle, are expressed in a ratio to theradius of the circle which describesthe arc. Thus in lig. 46— r sine A = GL = GLT _ GL _ ADGA AK = 1 cosec A co-sine a = FG = ALf _ AL _ ABAG AH = 1sec A tangent A =…
