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random Pop Quiz

Find all the angles that satisfy the equation 5 cos 2x + 9 sin x = 7 for 0 < x < 360.
Choose the right answer:
Option A x= 23.57, 29, 149, 155.42
Option B x= 23.58, 30, 150, 156.42
Option C x= 21.74, 32, 200, 199.45
Option D x= 20, 30.45, 151.67, 165.99
 OkazakiDaisuke posted più di un anno fa
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