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value for cos(5pi/12)
asked
Aug 8, 2017
in
Algebra
by
Brenden
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1 Answer
5π/12 = 2π/12 + 3π/12 = π/6 + π/4
cos(π/6 + π/4) = cos(π/6) * cos(π/4) - sin(π/6) * sin(π/4)
= (√3/2)(√2/2) - (1/2)(√2/2)
= √6/4 - √2/4
Have a nice day!
answered
Aug 9, 2017
by
quickwriter
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2,510
points)
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