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if sin α=1/3, pi/2 < α < pi and cos β = -1/3, pi < β < 3pi/2 find exact value of: (a) = -2sqrt(2)/3 (b) = 1/3 (c) = (d) = (e)

if sin α13 pi2 lt α lt pi and cos β 13 pi lt β lt 3pi2 find exact value of a 2sqrt23 b 13 c d e class=

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