One way to determine if the function is a trigonometric identity or not is to use a calculator on the choices. Choice A does not fit. Choice B should be (sin x)^2 + (cos x)^2 to become equal to 1. Choice D> should be cot x, the inverse of tan x to become equal to cos x/ sin x. Hence, answer is C>
Answer:
A
Step-by-step explanation:
14×x^4×y^6/7×x^8×y^2
2×x^-4×y^4
2×y^4/x^4
2y^4/x^4
7 doesn't go perfectly into 60. So it can only go in 8 times and you'll have a remainder of 4. I hope this helped :)