THE property of two rational numbers is -28/81. If one of them is -2/3, then find the other.
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Answer:
Step-by-step explanation:
Recall that on the unit circle, each point is represented as where
. In this case, we are asked to take a loot at the interval
.
We will use the definition of tangent to solve the problem. REcall that
So, in this case, tangent is undefined whenever the denominator is zero. That is, when . Checking the unit circle with the interval
, this restriction corresponds to the upper half of the unit circle. In this case, the x component of each point is cosine. We are interested at the points where
.
. This happens only at the point (0,1), which is associated with the value of