0 votes
810 views
in Mathematics Form 3 by
  1. Make a table and draw the graph of y= sin x–cos x for x in the range 0°≤x≤360°, with y values to 2dp and x intervals of 30° 
  2. use the graph to find the value of y when
    1. x=75° 
    2. x=255° 
  3. find the values of x for which y= – 0.9

1 Answer

0 votes
by
  1.  x 0306090120150180210240270300330360
    Sin x 00.50.87 10.870.5  0−0.5−0.87−1−0.87−0.5 0
    Cos x0.870.5  0 −0.5−0.87−1 −0.87−0.5 0 0.50.87 1
     y−1−0.370.37 1 1.37 1.37 10.37−0.37−1−1.37−1.37−1

    graph representing table
  2.  
    1. 0.75 ± 0.05      
    2. 0.675 ± 0.05    
  3. 6°, 264°    ±6°  

Related questions

Welcome to EasyElimu Questions and Answers, where you can ask questions and receive answers from other members of the community.

6.4k questions

9.6k answers

6 comments

590 users

...