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)
sinus-any of various air-filled cavities especially in the bones of the skull. ethmoid sinus, ethmoidal sinus, sinus ethmoidales-a sinus of the meatuses of the nasal cavity (behind the bridge of the nose). frontal sinus-one of a pair of cavities in the frontal bone.