Find the zeros of the function.9x^2-36=0I've gotten half way right up to9(x^2-4)=0
1 answer:
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First, we are going to use the Pythagorean identity: 
to rewrite our expression. Solving for 
in our Pythagorean identity we get that 
, so we can rewrite our expression as follows:
Next, we are going to use the trig identity:
to completely simplify our expression:
We can conclude that
Next, we are going to use the trig identity:
We can conclude that
