state gov Bihar Police Constable (सिपाही) Mock Test Series 2025 Quantitative Aptitude Trigonometry

જો sinA + sin 2 A = 1 હોય, તો અભિવ્યક્તિનું મૂલ્ય (cos 2 A + cos 4 A) ______ છે.

1
\(\frac{3}{2}\)
2
1
3
2
4
\(\frac{1}{2}\)
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