How do I find the value of sin 330?
2 Answers
Explanation:
We know from trigonometry that
Hence
The way I solve this is incorporating a myriad of different trigonometrical aspects into one solution.
Explanation:
First, we know that
Second, we know that when we add or subtract degrees from x in
Third, we know that only cos is positive in the 4th quadrant. This means that sin is negative.
The easiest way to go about doing this (with the least work possible) is to subtract a sin value from 360 degrees (as to not have to switch the trigonometric ratio being used).
360 - 330 = 30, so we are subtracting 30 degrees from 360 to get the sin inverse, 330.
Since we are subtracting from 360, the ratio will remain sin, and because it is in the 4th quadrant, the sin will be negative.
Therefore, our answer is
Sorry if this seems confusing, this is how I learnt it.