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3 years ago

13

What is the value of cos (tan^-1 1)

2 answers:

laila [671]3 years ago

6 0

Hope this helps you!

Tju [1.3M]3 years ago

6 0

Answer:

d

Step-by-step explanation:

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$\boxed{ \sum\limits_{n=4}^{15} (\frac{4}{3}(-3)^n)}$

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