Answer:
21.7
Step-by-step explanation:
divide
Answer:
Step by step
Remember, a reference angle is a positive acute angle that represents an angle θ of any measurement.
a)
, then its reference angle is
b)
is in the second cuadrant, then its reference angle is
c)
, then it is in the first cuadrant and the reference angle is .
d)
and it is in the third cuadrant, then its reference angle is
Your answer is c, an obtuse triangle because if the two side lengths are the same length along with a longer side, it become obtuse
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