Solve the following for θ, in radians, where 0≤θ< 2π.
−4sin2(θ)−3sin(θ)+5=0
select all that apply:

2.21
1.19
1.92
0.93
0.31
2.63

  0.93 radians & 2.21 radians

Step-by-step explanation:

2.21

0.93

Step-by-step explanation:

Given that;

This is a quadratic equation is , where

We want to solve for in radians, where 0≤θ<2π.

We apply the quadratic formula given by;

We substitute the given values to obtain;

Simplify;

or

When ,

--In the first quadrant.

In the second quadrant;

When , is not defined.

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