Do the equations y=2x+3 and x=1-2y have One common solution no common solution infinitely Many common solution explain how you k
1 answer:
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Answer: last option
Step-by-step explanation:
You need to remember the identity:
You need to find the cosine of angle P, then, you can identify in the figure that:
Therefore, the next step is substitute these values into , then you get:
You can observe that this matches with the last option.