state gov RSMSSB Junior Assistant & Lipik Grade (LDC) Mock Test 2024 Quantitative Aptitude Trigonometry

cos 4 A - sin 4 A બરાબર છે:

1
2cos 2 A + 1
2
1-2 sin2 A
3
2sin 2 A - 1
4
-(2sin 2 A + 1)
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