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Plz..solve it guys.. |
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Answer» Answer: Given, \bold{ \lim_{x \to\ {\pi/6}} \frac{\sqrt{3}sinx-cosx}{x-\pi/6}}lim x→ π/6
x−π/6 3
sinx−cosx
First of all we have to CHECK FORM of the limit , PUT x = π/6 , (√3 sinπ/6 - cosπ/6)(π/6 - π/6) = 0/0 is the form of limit We know, asinA -bcosA = √(a² + b²)sin{A - tan⁻¹(b/a)}, use it here, Then, √3sinx - cosx = √{√3² + 1²}sin{x - tan⁻¹(1/√3)} = 2sin(x - π/6) Now, limit converts in \bold{\lim_{x\to{\pi/6}}\frac{2sin(x-\pi/6)}{x-\pi/6}}lim x→π/6
x−π/6 2sin(x−π/6)
Use the STANDARD form for solution of Limit , Lim_{f(x)→f(a) sin{f(x)-f(a)}/{f(x) - f(a)} = 1 , use this here , Then, \bold{\lim_{x\to{\pi/6}}\frac{2sin(x-\pi/6)}{x-\pi/6}}lim x→π/6
x−π/6 2sin(x−π/6)
\bold{\lim_{x\to{\pi/6}}\frac{2sin(x-\pi/6)}{x-\pi/6}}lim x→π/6
x−π/6 2sin(x−π/6)
= 2 × 1 =2 plz mark as brainliest |
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