Year 12s: what will be the first way you research your future options? >>

Math problem pls sovle

Angelo2002

write down all the values of theta between 0 to 6pie for which sintheta=1

Reply 1

AzimP

Original post by Angelo2002

write down all the values of theta between 0 to 6pie for which sintheta=1

\sin \left(\theta \right)=1,\:0\le \theta \le 6\pi

Draw out your CAST diagram, 1 is a positive number so its in the first and second quadrant. Using your calculator (radians mode) to find the first angle, which you should get to be

\frac{\pi }{2}

, now on your cast diagram, represent this angle theta and draw out using arrows how to get that angle/triangle. From there you should be able to find all the values ranging from 0 to 6pie

Reply 2

Angelo2002

How do u find the first angle

done

Original post by Angelo2002

How do u find the first angle

I said use a calculator, just do the inverse, sin inverse of 1. If you want to be a little faster for exam practice. Look at the sine graph, you should be familiar about the maximums and minimums of the graph. The first maximum you should know is 90 degrees or pi/2. Another way of doing this question is to keep adding 2pi, because the sine function is 2pi periodic.

Quick Reply

Latest

Articles for you

How to revise for A-level Maths exams: AQA explains what to do

Thinking about taking an apprenticeship? Here’s what you need to know

The Student Room community guidelines

Terms and conditions

Math problem pls sovle

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you