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Solve 4sin^2(x)+5cos(x)=5 The smallest non negative radian solution is: The next smallest non-negative radian solution is:?

Science & Mathematics by Anonymous 2018-07-03 00:03:18

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Solve 4sin^2(x)+5cos(x)=5 The smallest non negative radian solution is: The next smallest non-negative radian solution is:?

2 answers

  • Anonymous

    Ans:

  • Anonymous

    4 - 4 cos²x + 5 cos x = 5 4 cos²x - 5 cos x + 1 = 0 [ 4 cos x - 1 ] [ cos x - ] = 0 cos x = 1/4 , cos x = 1 x = 0 radians , x = 1•32 radians

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