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Make a table and draw the graph of y= sinx–cosx for x in the range 0°≤x≤360°, with y values to 2dp and x intervals of 30°
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Aug 2, 2021
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Mathematics Form 3
by
anony mous
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°
use the graph to find the value of y when
x=75°
x=255°
find the values of x for which y= – 0.9
trigonometry
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answered
Aug 2, 2021
by
anony mous
x
0
30
60
90
120
150
180
210
240
270
300
330
360
Sin x
0
0.5
0.87
1
0.87
0.5
0
−0.5
−0.87
−1
−0.87
−0.5
0
Cos x
1
0.87
0.5
0
−0.5
−0.87
−1
−0.87
−0.5
0
0.5
0.87
1
y
−1
−0.37
0.37
1
1.37
1.37
1
0.37
−0.37
−1
−1.37
−1.37
−1
0.75 ± 0.05
0.675 ± 0.05
6°, 264° ±6°
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