1+1 equals 2 plus 3 get brainlist if u answer first
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18 students are 1/10 of the number of seventh graders 
First choice.
First choice.
Answer:
Step-by-step explanation:
Recall what the relationship between cosine and secant:
In other words, secant is the reciprocal of cosine.
So, if we know cosine, we only need to find its reciprocal to find secant.
We are given that cosine is:
Then secant must be:
So:
Square:
And we're done!