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1.5 Trigonometry
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Question 48
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Solve, for
0≤x≤3600 \leq x \leq 360
0
≤
x
≤
360
, the equation,
2tan2x+7secx+1=0 2\tan^2x + 7\sec x + 1 = 0
2
tan
2
x
+
7
sec
x
+
1
=
0
Give your answers to 1 decimal place.
[5]
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