21*x=9*21
9*21=189
21*x=189
Divide 189 by 21 to solve for X or in this case "Blank"
189/21= 9
The vertex angle bisector divides the triangle into two congruent right triangles. The sine of half of the vertex angle will be half of the base divided by the side (from the definition of the sine of an angle). Then the total vertex angle is ...
α = 2×arcsin(3.5/5) ≈ 88.9°
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Using the Law of Cosines, the vertex angle can be found as
arccos((7^2 -5^2 -5^2)/(-2*5*5)) = arccos(1/50) ≈ 88.9°
The correct answer is option c
Answer: 3/5
Step-by-step explanation:
First take the derivative of the function
You will then get -> 2y (dy/dx) + (((x)(dy/dx) - (y)(1))/(x)^2 ) -1
Solve for dy/dx
You will then get -> dy/dx = (x^2+y)/(x+2x^2y)
Now plug in (1,2) into dy/dx
You should get 3/5