Question

Use the function defined below to find an equation of the tangent line at the point indicated.

y = cos(x), x = pi/3

Answer 1

Please show steps.

Answer 2

take the derivative, get
\[-\sin(x)\] then find
\[-\sin(\frac{\pi}{3})\] for your slope.

Answer 3

then use the point - slope formula to find the equation for the line.

Answer 4

Would I write it as -sin(pi/3) or would I make it -(sqrt(3)/2)?

Answer 5

you need the second one, the actual number

Answer 6

Alright. Thank you!

Answer 7

yw

Answer 8

Could you help me finish the equation? :p