Please help , i know i have to use sine and cosine but i cant seem to get the right answer :)
2 answers:
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Alright, lets get started.
For making complete square, we will add and subtract 49 in this
Comparing the standard equation of parabola
where (h,k) are vertex
So, comparing the equation with standard one, h, k would be = (-7 , -89)
So, the vertex are (-7 , -89) : Answer
Hope it will help :)