जर \(\rm \frac{k-k\cot^230^\circ}{1+\cot^2 30^{\circ}}\) = sin2 60° + 4 tan245° - cosec260°, तर k चे मूल्य (दोन दशांश पर्यंत बरोबर) आहे :

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SSC CGL 2022 Tier-I Official Paper (Held On : 03 Dec 2022 Shift 3)
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  1. 5.55
  2. -6.83
  3. -5.58
  4. 6.83

Answer (Detailed Solution Below)

Option 2 : -6.83
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दिलेले आहे:

 \(\rm \frac{k-k\cot^230^\circ}{1+\cot^2 30^{\circ}}\)= sin2 60° + 4 tan245° - cosec260°

वापरलेली संकल्पना:

Trigo

गणना:

\(\rm \frac{k-k\cot^230^\circ}{1+\cot^2 30^{\circ}}\)= sin2 60° + 4 tan245° - cosec260°

\(k \frac {1 - 3}{1 + 3}\)= 3/4 + 4 × 1 - 4/3

\(\frac {-k}{2}\)= 41/12

⇒ k = -41/6

⇒ k ≈ -6.83

∴ k चे मूल्य -6.83 आहे.

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