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Multiple Choice Questions

if 0 lt lt 90o sin 3 5 and x cot then what is the value of 1 3x 9x2 27x3 81x4 243x5 ........

Quantitative Aptitude (CDS) Trignometry

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if 0< $\theta$ <90^o , sin $\theta$ = 3/5 and x = cot $\theta$ , then what is the value of 1+3x+9x² +27x³ +81x⁴ +243x⁵?

941

1000

1220

1365

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Explanation:

sin $\theta$ =3/5 => cot $\theta$ =4/3
1+3x+9x²+27x³+81x⁴+243x⁵
=1+3.4/3+9.16/9+27.64/27+81.256/81+243.1024/243
=1+4+16+64+256++1024 = 1365

By: Munesh Kumari

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