: an angle generated in a direction opposite to an arbitrarily chosen usually clockwise direction.

An obtuse angle is a type of angle that is always larger than 90° but less than 180°. In the given figure, ∠XYZ shows an obtuse angle.

Answer: Obtuse angle lies between 90° and 180° and look like a reclined chair. Let us explore more about obtuse angles. Explanation: The measure of obtuse angles is greater than 90° and less than 180°.

An obtuse angle has a measurement greater than 90 degrees but less than 180 degrees. However, A reflex angle measures more than 180 degrees but less than 360 degrees. So, an angle of 190 degrees would be reflex.

2 Answers. Negative angles has to do with the direction of rotation that you consider in order to measure angles. Normally you start counting your angles from the positive side of the x axis in an anti-clockwise direction of rotation: negative is the equivalent of these words in math.

To find a positive and a negative angle coterminal with a given angle, you can add and subtract 360° if the angle is measured in degrees or 2π if the angle is measured in radians .

Going anti-clockwise means the angle increases. So if you go from −π to π, you go around the circle anti-clockwise, but you start on the left, not on the right, where the angle is 0. If you’re going from 0 to −π, then you’re going clockwise half around the circle.

The isoelectric point (pI, pH(I), IEP), is the pH at which a molecule carries no net electrical charge or is electrically neutral in the statistical mean.

So yes, since Pi is a positive real number, there must exist a negative Pi as well. Well, it holds no special significance, like Pi does. It comes up when evaluating trig functions in radians, amongst other things, but don’t expect the existence of some sort of negative cirlce.

For a negative angle, you simply need to rotate in the other direction (i.e., clockwise instead of anti-clockwise). This means that for an angle of −40∘, you end up at the same point (and with the same values of sin and cos as an angle of 320∘.

Now the measure of the angle is -m, a negative value when measured clockwise is, because all angles have to be acute to apply the various trigonometrical ratios or relations. Hence, cosine of a negative angle changes into a positive value.

Note: Since the sine and cosine ratios involve dividing a leg (one of the shorter two sides) by the hypotenuse, the values will never be more than 1, because (some number) / (a bigger number) from a right triangle is always going to be smaller than 1.

It works only for angles between 0 and 90 degrees. This definition allows sine to take negative values because the vertical coordinate will be negative in the two bottom quadrants.

the value of sin and Cos is always less than 1 because sin is equals two perpendicular ÷ hypotenuse and perpendicular is always smaller than hypotenuse so it is not possible that sin is greater than 1 same case in cos also cos is equals to base divided by hypotenuse and base is always smaller than hypotenuse so it is …

The value of tan A is always less than 1. Solution: False; value of tan begins from zero and goes on to become more than 1.

Answer. Answer: This is false. The value of tan A is not less than 1.

d) tan θ = 20 is correct since tan θ ∈ R. Thus, option (C) sec θ = ½ is the correct answer.