engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Mathematics Trigonometry Trigonometric Identities

tan θ = √5, எனில் cos θ -இன் மதிப்பு.

1
√6 
2
\(\rm \frac {1}{3\sqrt2}\)
3
\(\rm \frac {1}{\sqrt6}\)
4
\(\rm \frac {1}{2\sqrt3}\)
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