Tan225- 81 -69 261 - tan21 -

The correct option is C √(3) ...

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Domain and Range of Basic Inverse Trigonometric Functions

tan225- 81 ...

Question

$\frac{tan 225 - cot 81 \cdot cot 69}{cot 261 + tan 21}$ =

0.112

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\frac{1}{\sqrt{2}}

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\sqrt{3}

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\frac{1}{\sqrt{3}}

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Solution

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Similar questions

\frac{tan 225^{\circ} - cot 81^{\circ} cot 69^{\circ}}{cot 261^{\circ} + tan 21^{\circ}}

\frac{tan 225^{0} . cos 81^{0} . cot 69^{0}}{cot 261^{0} + tan 21^{0}} =

\frac{cot 81^{o} cot 69^{o} - tan 225^{o}}{cot 261^{o} + tan 21^{o}}

\frac{tan 225^{\circ} - cot 81^{\circ} cot 69^{\circ}}{cot 261^{\circ} + tan 21^{\circ}}

r

^{69} C_{3 r - 1} -^{69} C_{r^{2}} =^{69} C_{r^{2} - 1} -^{69} C_{3 r}

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