We use the identity sin (A - B) = sin A cos B - cos B sin A
so the above = sin (11pi/12 - pi/6) = sin 3pi/4 = 1 / sqrt2 answer
The square root of 144 is 12. So multiply 8.3333 by 12. You should get 99.9996.
first is proportional. y is 1 and 1/4 times x
second is not proportional.
reason? divided any y value by its corresponding x value and you'll keep getting 1.25, or 1 and 1/4. and the second one is not proportional because dividing the y values by their corresponding x value will give different answers.
maybe im wrong maybe im right you choose to trust me or not.
