NEED AN ANSWER NOW!!

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

Choose the correct classification of 3x4 − 9x3 − 3x2 + 6. 5th degree polynomial 4th degree polynomial 9th degree polynomial 24th degree polynomial

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles