What is 3/8 divided by 5/6 in simplest form quick

correct answer is c. just did it

step-by-step explanation:

to prove that sin⁴a+2cos²a-cos⁴a, we can factor out cos²a

sin⁴a+2cos²a-cos⁴a

= sin⁴a+cos²a(2-cos²a)

since sin²a + cos²a = 1, cos²a = 1 - sin²a so substituting

= sin⁴a+cos²a(2-(1 - sin²a) )

= sin⁴a+cos²a(1 + sin²a)

= sin⁴a+cos²a+ sin²a cos²a distribution

= sin⁴a + sin²a cos²a +cos²a

= sin²a(sin²a+cos²a) +cos²a by factoring

= sin²a * 1 + cos²a by pythagorean identity

= 1 by pythagorean identity