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Mashcka [7]
2 years ago
8

Question on image. (calculus)

Mathematics
1 answer:
tatuchka [14]2 years ago
5 0

Answer:

D

Step-by-step explanation:

\tan^{-1}(\frac{a}{b})} is the angle on the right, so

\cos[\tan^{-1}(\frac{a}{b})}]=\frac{b}{\sqrt{a^2+b^2}}

That is D

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