*16. Given that cos x= k and that x is acute, express in terms of k, (a) cos 2x
(b) sin 2x
(c) cot 2x
(d) sin 1/2x

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Pls brainliest will be awarded if answer is correct

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?