In the figure, GHF = EHD. Which statement is true by CPCTC?
1 answer:
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By using the definition of the inverse cosine function, we will see that:
<h3>How to complete the expression?</h3>
We have the expression:
Remember that if:
Then, in what do we need to evaluate the cosine function to get an output equal to zero?
Then:
Then we can replace the question sign with a 2.
If you want to learn more about the cosine function, you can read:
Answer:
see below
Step-by-step explanation:
10x+18<-2
Subtract 18 from each side
10x+18-18<-2-18
10x < -20
Divide by 10
10x/10 < -20/10
x < -2
