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William812
 2 years ago
Give the exact value of the expression without using a calculator:
sin(2cos(inv) 1/5)
William812
 2 years ago
Give the exact value of the expression without using a calculator: sin(2cos(inv) 1/5)

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telijahmed
 2 years ago
Best ResponseYou've already chosen the best response.0let cos(inv) 1/5 = A

telijahmed
 2 years ago
Best ResponseYou've already chosen the best response.0\[\sin (2A)= 2sinAcosA\]

telijahmed
 2 years ago
Best ResponseYou've already chosen the best response.0what is A you substitute

telijahmed
 2 years ago
Best ResponseYou've already chosen the best response.0\[2\sin (\cos ^{1}1/5) \cos (\cos ^{1}1/5)\]

telijahmed
 2 years ago
Best ResponseYou've already chosen the best response.0\[2\sin (\cos ^{1}1/5) * 1/5\]

telijahmed
 2 years ago
Best ResponseYou've already chosen the best response.0can you go on from here
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