Math, asked by bhaveshbora, 2 months ago

solve and find tan85-tan40-tan85.tan40

Answers

Answered by Silverness

0

Answer:

tan(85-40) = (tan85 - tan40) /(1+tan85.tan40) using tan(A-B) formula.

So, (tan85 - tan40) /(1+tan85.tan40) = tan45 = 1

Now,

tan85 - tan40 = 1 + tan85.tan40

Therefore, tan85 - tan40 - tan85.tan40 = 1. Ans.

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