If a = 18 5 18 7 18 , and x is the solution of the equation y = 2 [x] + 2 and y = 3 [x –…
Mathematics · JEE Advanced · NTA Exams — Trigonometry
If a = \(\sin \frac{\pi}{18} \sin \frac{5 \pi}{18} \sin \frac{7 \pi}{18},\)and x is the solution of the equation y = 2 [x] + 2 and y = 3 [x – 2], where [x] denotes the integral part of x, then a is equal to
- [ x ]
- \(\frac{1}{[x]}\)
- 2 [ x ]
- [ x ]2
Answer
(B) 1 [x]
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