Question

How would I start this? Tangent line problem.

Answer 1

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Answer 2

You to find when f'=0

Answer 3

Oh, alright, seems simple enough, thanks!

Answer 4

Did you ever find f'?

Answer 5

It would be
\[\LARGE f'(x)=2cosx+2sinxcosx\]
right?

Answer 6

right now set that =0 and solve for x

Answer 7

\[2\cos(x)(1+\sin(x))=0\]

Answer 8

Solve both equations:
cos(x)=0
1+sin(x)=0

Answer 9

And that'll give me x, to plug in and find y right?

Answer 10

yep once you get x here
make sure you plug into f(x) to get the corresponding y for each x in that domain given.

Answer 11

Alright, thanks again myininaya :)