370
2 sin?
+2cos? " +2sec ? = 10
4.
4
3
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Step-by-step explanation:
1 is a trigonometrical identity as it is satisfied for every value of x Î R. SOLUTION OF ... Þ 3 – 2cos q – 4 sin q – 1 + 2sin2 q + 2sin q cos q = 0.
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