Students were asked to answer a question at school and to indicate what is most important for them to succeed. The one that response stood out from the rest was practice. People who surely are successful do not become successful by being born. They work hard and determination their lives to succeeding. This is how you can get your goals. beneath are one of the answer and question example that you could actually use to practice and upgrade your knowledge and also give you insights that can help you to keep up your study in school.

## Question:

What is the period of the sinusoid given by y=-3cos(2pi/5 x)?

## Answer:

y=-3cos(2pi/5 x)

y=a cos (bx+c) +d

a=-3; b=2pi/5; c=0; and d=0

Period: P=2pi/b

P=2pi/(2pi/5)

P=2pi*[5/(2pi)]P=(2pi*5)/(2pi)

P=5

Answer: The period of the sinusoid given by y=-3cos(2pi/5 x) is 5.

From the answer and question examples above, hopefully, they could simply guide the student resolve the question they had been looking for and observe of all declared in the answer above. You could simply then have a discussion with your classmate and continue the school learning by studying the topic together with each other.