Math, asked by ramanhiteshi, 7 months ago

the value of tan 18 tan 23 tan 42 tan 67 is​

Answers

Answered by sathyamargerate0410
0

Step-by-step explanation:

tan(23+67)=tan23°+tan67°

1-tan23°tan67°

tan(90)=tan23°+tan67°

1-tan23°tan67°

1 =tan23°+tan67°

0 1-tan23°tan67°

=> 1-tan23°tan67°=0

tan23 tan67=1

tan(18+42)=(tan18+tan42)/1-tan18tan42

tan60°=(tan18+tan42)/1-tan18tan42

√3=(tan18+tan42)/1-tan18tan42

1-tan18 tan42=(tan18+tan42)/√3

tan18 tan42=1-(tan18+tan42)/√3

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