Popular California Cities. 1  Long Beach. 2  Los Angeles. 3  San Diego.  San 1  Francisco. San Jose.  Ventura.
The common schoolbook definition of the sine of an angle in a right triangle (which is equivalent to the definition just given) is as the ratio of the lengths of the side of the triangle opposite the angle and the hypotenuse, i.e., (1)
Definition of 'sine qua non'. sine qua non (sÉªni kwÉË noÊn , US - nÉËn ) singular noun. A sine qua non is something that is essential if you want to achieve a particular thing.