A triangle has sides 6cm, and 7cm, use Pythagorean Theorem to figure out its hypotenuse.

What is the missing step in this proof ?

What is the missing justification in the proof of the pythagorean identity below, sin^2x+cos^2x=1, using a right triangle?

Jason jumped off of a cliff into the ocean in acapulco while vacationing with some friends. his height above ocean measured in feet as a function of time could be modeled by the h(t) = -16t2 + 16t + 480, where t is the time in seconds from jumping off. how high is the cliff in feet?