how to find the product of tan36 and tan18

how to find the product of tan36 and tan18

Grade:12th pass

2 Answers

Aman Bansal
592 Points
12 years ago

Dear NAidu,

Tan36 * Tan18 = -8.8147

Best Of luck

Plz Approve the answer...!!!!

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Aman Bansal

Askiitian Expert

bhanuveer danduboyina
95 Points
12 years ago

Let A=18 degrees 

tanA.tan2A = [sinA/cosA ][sin2A/cos2A?]

1+sec2A = root5

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