SOLUTION: please find the slope of the tangent to the curve by y=cos x at x= pi/2 could you please show working. thank you.

Algebra ->  Trigonometry-basics -> SOLUTION: please find the slope of the tangent to the curve by y=cos x at x= pi/2 could you please show working. thank you.      Log On


   

Question 330105: please find the slope of the tangent to the curve by y=cos x at x= pi/2
could you please show working. thank you.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The slope of the tangent is equal to the value of the derivative of cos(x) at that point.
m=d%28cos%28x%29%29%2Fdx=-sin%28x%29
m=-sin%28pi%2F2%29
m=-1
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