Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMix Examples-Trigonometrical Ratios, Functions and Identities
Difficultयदि $a = \frac{x}{y-z}$,$b = \frac{y}{z-x}$,और $c = \frac{z}{x-y}$,जहाँ $x, y$,और $z$ भिन्न हैं ताकि $x-y, y-z, z-x \neq 0$,तो $ab + bc + ca + abc$ का मान क्या है?
- A$0$
- B-$1$
- C$1$
- D$2$
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