Trigonometry! :D

Geometry Level 2

Solve:-

tan ⁡ 10 0 ∘ + tan ⁡ 12 5 ∘ + tan ⁡ 10 0 ∘ × tan ⁡ 12 5 ∘ = ? ? \tan 100 ^ \circ + \tan 125 ^ \circ + \tan 100 ^ \circ \times \tan 125 ^ \circ = ??


The answer is 1.

Ram Gautam by Ram Gautam , 22, India

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1 solution

Shrihari B
Dec 26, 2014

Hint : Use the fact that tan(225)=tan(100 + 125) Use the formula tan(a+b) = tan(a) + tan(b)/ 1- tan(a)tan(b)

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