Which of the following is not an identity? O A. tan²x = sec2x- sinax-cos2x
O B. (tanx + cotx)2 = csc2 x+ sec2 x
O C. (cosx + sinx)2 = 1 + 2cosx sinx
O D.
1+ cos2x
sinx

side side side

side angle angle

angle side angle

side angle side

step-by-step explanation:

details

step-by-step explanation:

5 pm

step-by-step explanation:

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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