state gov Patna Civil Court Stenographer Mock Test 2022 Quantitative Aptitude Trigonometry

यदि sinθ का मान = \(1\over3\) है, तो cos3θ का मान ज्ञात कीजिए।

1
\(27\sqrt7\over22\)
2
\(10\sqrt5\over27\)
3
\(10\sqrt2\over27\)
4
\(27\sqrt2\over22\)
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