1 107 



APPENDIX A 



TABLE OF NATURAL SINES 



Note. The sine of any given angle is the length of the perpendicular opposite the given angle i 

 right-angled triangle which contains the given angle divided by the length of the hypotenuse. T 

 above table is constructed on the principle that the hypotenuse is always equal to unity, by which 

 means the fraction is got rid of, as the denomiaator may be left out. Thus, 



na 

 The 



hypotenuse 



= . 5 



4B2 



