Suppose theta is an angle in standard position with cos theta > 0. in which quadrants could the terminal side of theta lie? select two answers. i ii iii iv

Here given cos Θ >0. That means cos Θ is positive.

We know that, cos Θ = (adjacent)/(hypotenuse) =

We also know that, hypotenuse can not be negative. So we will get cos positive where x co-ordinate is positive.

In first quadrant we will get positive x axis, in second quadrant there is negative x axis and same for third quadrant. In fourth quadrant we will get again positive x axis.

So cos is positive in first and fourth quadrant. Therefore, terminal side of theta lies in first and fourth quadrant.

We have got the required answer.

Option 1 and 4 is correct.

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