Find cos x if sin^2x-1 over cos x= -1.

Acylinder has volume 45π and radius 3. what is it’s height?

Average acceleration: i have no idea how to do this.

The liabilities of cullumber are $99,000. owner’s capital is $143,000; drawings are $96,000; revenues, $467,000; and expenses, $301,000. what is the amount of cullumber company’s total assists?