radians

How would we get this answer?

(edited 7 months ago)

question 8.png467.2KB

q8 answer.jpg116.7KB

Original post by taqiyah

How would we get this answer?

The first part or a), b), c)?

OP

sorry i didnt make it clear - im referring to question 8 not the challenge question

Original post by taqiyah

sorry i didnt make it clear - im referring to question 8 not the challenge question

It looks similar to q7) so when the curve cut the coordinate axes, i.e. all the points when x=0 and when y=0. What are you unsure about?

(edited 7 months ago)

OP

i do not know how to calculate the values - to find the x values, i added 2/3 pi to the current x values on a normal cos graph but that didnt give me the correct answer

Original post by taqiyah

i do not know how to calculate the values - to find the x values, i added 2/3 pi to the current x values on a normal cos graph but that didnt give me the correct answer

You must know how to calculate when it cuts the y-axis, so when x=0. Just sub it in.

For cutting the x axis, its when
cos(x - 2pi/3) = 0
so when
x - 2pi/3 = pi/2 +/-k*pi
for integers k.

Quick Reply

Latest

Trending

Trending

Articles for you

What is an LLM and how could it benefit your career?

What is an LLM and how could it benefit your career?

Powerful questions business students forget to ask their career advisers

Powerful questions business students forget to ask their career advisers

Why I chose a law degree and what studying law was like

Why I chose a law degree and what studying law was like

What can you do with an arts degree?

What can you do with an arts degree?