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Dovator [93]
3 years ago
6

*10 POINTS*

Mathematics
1 answer:
Kipish [7]3 years ago
8 0
Draw the altitude from the vertex angle to the base of the triangle. Since the altitude is perpendicular to the base, 2 congruent right triangles are created. Then, use the cosine ratio to find the length of each congruent side.
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Step-by-step explanation:

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I NEED HELP PLEASE, THANKS! :)
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Answer:  tan(14x)

<u>Step-by-step explanation:</u>

Consider the Sum Formula for tan:

tan(A + B)=\dfrac{tan(A)+tan(B)}{1-tan(A)(tan(B)}\\\\\\tan(9x+5x)=\dfrac{tan(9x)+tan(5x)}{1-tan(9x)(tan(5x)}\\\\\\\large\boxed{tan(14x)}=\dfrac{tan(9x)+tan(5x)}{1-tan(9x)(tan(5x)}

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