Please MArk my brainlliest..............

is this english

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Please MArk my brainlliest..............

is this english

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=Log(tan1.tan89.tan2.tan88.tan3.tan87..........tan44.tan46.tan45)

=Log{tan1.tan(90-1).tan2.tan(90-2).tan3.tan(90-3)...........tan44.tan(90-46).tan45

=Log(tan1.cot1 . tan2.cot2. tan3.cot3 .........tan44.cot44.tan45)

=Log(1*1*1**.......1*1)

=log1 = 0