Evaluate 2 tan² 45't cos²30 - sin²60°
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The number of zeroes is 0 as the graph intersects the x-axis at no any point.
(ii) The number of zeroes is 1 as the graph intersects the x-axis at one point only.
(iii) The number of zeroes is 3 as the graph intersects the x-axis at three points.
(iv) The number of zeroes is 2 as the graph intersects the x-axis at two points.
(v) The number of zeroes is 4 as the graph intersects the x-axis at four points.
(vi) The number of zeroes is 3 as the graph intersects
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you can see above image
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