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Simplify, cot2 sec2 π cos2 πA = 60。.. B-300 verifyπ ππ πCOS4 COs 6plify, cot2 즈 snd π- 15 sincos -4 cos cos cos

Answer»

in the first expressioncos^2π/2=00-15*1*1/√2-4*√3/2*1/√2*1/2-15/√2-√3/√2-15-√3/√2

don't understand it



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