Find a vector parametrization of the circle of radius 6 in the xy-plane, centered at the origin, oriented clockwise. The point (6,0) should correspond to t=0. Use t as the parameter in your answer.

Answer with Step-by-step explanation:

We are given that  

Radius of circle,r=6 units

Center of circle=(0,0)

In xy-plane , for clockwise orientation

Substitute the value of r

When we change the orientation then sign of the parameter will be change.

At t=0, x=6  but the sign of y will be change

Therefore,

Substitute t=0

Hence, the point (6,0) should to correspond to t=0

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)