Math, asked by american1, 5 months ago

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tan48°tan23°tan42°tan67°=1.

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Answers

Answered by tarneeverma93

1

Answer:

L.H.S. tan48 tan42 tan67 tan23

= tan48 tan (90-48) tan67 tan(90-67)

=( tan48 cot48) ( tan67 cot 67)

= tan48 1/tan48 tan67 1/tan67

= 1×1

= 1

R.H.S

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