The length of one leg of a right triangle is 21 ft and the length of the hypotenuse is 29 ft. what is the length of the other leg? 35.8 feet 20.0 feet 50.0 feet 25.0 feet

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

20 da is equal to a. 2,000 cm. b. 2 m. c. 20,000 cm. d. 20,000 mm

Ten times the square of a non-zero number is eqaul to ninety times the number