Precalculus only right answer and you. me

Given:

We know the identity

So we can equate

when

Tan is positive in first and third quadrant

So we will get one move value for x

when

So for  

 and

Divide by 2 on both sides

 and

To get general solution we add

So option A  and option C are correct.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation: