9907

9911

9914

9929

9932 9936

9986 9988

88°

9994 9995

9999

60'

50'

9918
9939
9948 9951 9954 9957
9964 9967 9969 9971 9974 9976
9978 9980 9981 9983 9985 9986 3°
9989 9990 9992 9993 9994 2°
9996 9997 9997 9998
9999 10000 10000 10000
40' 30' 20'

9922

9925

7°

9942 9945

6°

NATURAL TANGENTS AND COTANGENTS.

In this table are given the tangents of angles from 0° to 45° and the cotangents of angles from 45° to 90°. To obtain the tangent of an angle between 45° and 90°, look up the cotangent of the angle desired and take the reciprocal of the number found. The same process will give the cotangents of angles between 0° and 45°.