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The value of \(\frac{cot 25° - cot 40°}{tan 50° - tan 65°}\) is? |
1 0 \(\sqrt { 3}\) -1 |
-1 |
\(\frac{cot 25° - cot 40°}{tan 50° - tan 65°}\) = \(\frac{tan 65° - tan 50°}{tan 50° - tan 65°}\) (using rule; cot θ = tan (90- θ) ⇒ - \(\frac{tan 50° - tan 65°}{tan 50° - tan 65°}\) = -1 |
