Cos^-1(-x)=-cos^-1x for -1< x< 1 true or false?

We are given

Firstly, we will simplify left side

and we will check whether it is equal to right side

Left side:

Let's assume y left side expression

now, we can take cos on both sides

we can simplify it

Right side:

Let's assume y left side expression

Multiply both sides by -1

now, we can take cos on both sides

we can simplify it

we can see that

both sides cos(y) value is different

so, this is FALSE.........Answer

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.

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step-by-step explanation: he ehe heh step by the thy