Use the first five terms of the trigonometric series to approximate the value of cos- 4x/7to four decimal places. Then compare the approximation to the actual value.
-0.9609, -0.9659
-0.2224, -0.2225
-0.9649,-0.9659
-0.9568, -0.9659

the answer to the question is a

step-by-step explanation:

it has the same slope and the same y-intercept.

y + 11 = -7/9(x - 18)

y + 11 =-7/9x + 14

b

y = -7/9x + 3

y-intercept (0, 3)

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.

me! what did you put for this question?

step-by-step explanation:

good luck on your studies! : )

david edward.