In taking the versed sine of 6°, a minute error is involved, though not one large enough to change the last figure in the above quotient.

Rosamond set forth house-hunting, dropping Terry ere long at the Library, where she went to make inquiries, and find the sine qua non.

She lacked that absolute sine qua non of art and poetrypersonality.

Also: "But we proceeded to ram down their throats a preconceived theory that the only road to self-government was for an alien people to step in and make the ignorant masses the sine qua non."Blount, p. 546.

You think fresh air, and quiet and cleanliness extravagant, perhaps dangerous, luxuries, which should be given to the patient only when quite convenient, and medicine the sine qua non, the panacea.

In one second of time it moves from A to C, and is deflected from the tangential direction of motion a distance equal to A E, the versed sine of the angle, A O C.