Math, asked by ria1nshitel, 1 year ago

Show that tan48 x tan23 x tan42 x tan67=1??????

Answers

Answered by farihahmuhammedi181

tan48 X tan23 X tan23 X tan67=1
tan48Xtan23Xtan(90-48)Xtan(90-23)=1
tan48Xtan23Xcot48Xcot23=1
tan48Xtan23X1/tan48X1/tan23=1(tan48 and tan23 gets cancelled)
so 1X1 =1

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