Teaching NVS TGT 2024 Test Series Quantitative Aptitude Trigonometry

cot 4 A + cot 2 A = 1 எனில், cos 4 A - 3cos 2 A இன் மதிப்பைக் கண்டறியவும்.

1
2
2
-1
3
-2
4
1
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