state gov Karnataka Forest Guard (ಅರಣ್ಯ ರಕ್ಷಕ) Mock Test 2023 Quantitative Aptitude Trigonometry

\(\rm \tan α=\frac{1}{√3}\) மற்றும் tan β = √3 எனில், cos (α + β) இன் மதிப்பு என்ன?

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