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Find the exact value of tan (arcsin (2/5)). Explain your reasoning.

Find the exact value of tan (arcsin (2/5)). Explain your reasoning.
asked 128k views
4 votes
Find the exact value of tan (arcsin (2/5)). Explain your reasoning.

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User Markive
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1 Answer

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arcsin (2/5) = arctan(2/√21)
now as tan (arctan (x) ) = x
hence tan (arctan (2/√21)) = 2/√21 = 0.436
ask if you do not understand the first part
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User Marcelo Guedes
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