engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Trigonometry Trigonometric Functions

समीकरण sin 2x + cos x = 0 का सामान्य हल ज्ञात कीजिए।

1
2nπ +- π/2
2
nπ/6 + π/2
3
nπ/5 - π/2
4
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