In for each circumstances, the variety of greet x viewpoints comprises the fresh new domain of the inverse function and the directory of desired ? viewpoints constitutes the newest codomain.
It will be possible for the property value among basics from inside the a standard triangle getting more than 90° – this new sine rule continues to be good to possess like instances, once the trigonometric means sin( ^ A), such as, can be used rather than the trigonometric ratio sin A great ^ .
Notice that the cosine rule reduces to Pythagorass theorem for A ^ = 90°. The cosine rule is also valid for $90° < A ^ < 180°.
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