defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

tan 4º × tan 43º × tan 47º × tan 86º-এর মান নির্ণয় করুন।

1

1

2

-1

3

অসংজ্ঞাত

4

0

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