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2 answers:
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Answer:
The answer to your question is below
Step-by-step explanation:
csc α - cot α =
Work with the left part
Simplify
Multiply by the reciprocal
Simplify
Remember that
sin²α = 1 -cos²α
Substitute the previous equation
Simplify
The identity i proved.
Answer:
1.49
Step-by-step explanation:
In order to find the slope of the tangent line to a given equation, and in a given point, we need to:
1. Find the first derivative of the given function.
2. Evaluate the first derivative function in the given point.
1. Let's find the first derivative of the given function:
The original function is
But remeber that the derivative of is
so,
2. Let's evaluate the first derivative function in the given point
The given point is (0.4,1.49) so:
Notice that the calculated slope of the tangent line is equal to the y-coordinate of the given point because f'(x)=f(x). In conclusion, the slope of the tangent line is equal to 1.49.