Answer:
The last one
Step-by-step explanation:
x can only have one value whereas y can be constants like in last graph
Answer: 
Step-by-step explanation:
Given

lies in the fourth quadrant
So, sine must be negative in the fourth quadrant
Using identity
to find sine value


Notice that 38 and 52 make a total of 90
sinA=cos(90-A)
sin38=cos52, therefore the answer is zero
Answer:
169
Step-by-step explanation:

Step-by-step explanation:
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