Nick wrote the function p(x) = 17 + 42x – 7x2 in vertex form. His work is below.
2 answers:
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First option is correct.
Since we have given that
JKL is a right triangle.
Length of JK = 12
Length of KL = 5
By Pythagoras theorem, we get that
So, cos (L) would be
cos(L)=base/hypotenuse
cos(L)=5/13
Hence, First option is correct.
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