Mathematics, 06.12.2019 07:31 cavejr87
Use a double or half angle identity to find cos (7π/12). provide the exact answer in simplest form (no approximations)
Answers: 3
. cos(
) is the same thing as cos(π/3 + π/4) and then you use the formula cos(a + b) = cos(a)cos(b) + sin(a)sin(b)
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Use a double or half angle identity to find cos (7π/12). provide the exact answer in simplest form (...
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