Cot(-x)*sin(x) = -cos x help pls lol

simplify that fist answer gets brainliest and if its a bs answer it doesn't count :D

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Step-by-step explanation:

first you will need to know the negative angle identities, which show that cot(-x)=-cot(x), you can then simplify that to -(cos/sin) so when you multiply by sin(x), or sin(x)/1, the sines cancel out and you are left with -(cos(x)/1)*(1/1) so your equation is now -cos(x)=-cos(x), so when you add the cosines over, you get zero

the answer is a if my teacher taught me correct