There are many opinions as to what you should eat before, during and after your workouts. The reality is that your body is your vehicle, so youâve got to keep your engine â your heart â running while you work out.
A reference angle for a given angle in standard position is the positive acute angle formed by the $x$-axis and the terminal side of the given angle. Reference angles, by definition, always have a measure between 0 and . Due to the periodic nature of the trigonometric functions, the value of a trigonometric function at a given angle is always the same as its value at that angle's reference angle, except when there is a variation in sign.
When no angles are known, the cosine rule is the only option. Step 1: Begin by using the cosine rule to find the largest angle. NOTE: We find the largest angle first, because there can only be one angle in a triangle that is obtuse (greater than 90). If a triangle has an obtuse angle, then this will be it. The reason for finding it first is that in the next step we will use the sine rule to find the second angle.