Answer:
the answer is
or 
Step-by-step explanation:
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.
Answer:
Here you go!, hope it helped. 68-32x
Answer:
cos K = 12/13
Step-by-step explanation:
cos theta = opposite side/ hypotenuse for a right triangle
cos K = 12/13
D) attached is a picture, I would’ve typed it out but I can’t use the square root symbol
the first three are irrational