railway RRB Technician Grade 1 Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

ଯଦି sinx = cosx, ଏବଂ x ସୂକ୍ଷ୍ମ କୋଣ ଅଟେ, 2sin2 x - 3cos2 x ର ମୂଲ୍ୟ ହେଉଛି:

1
1/2
2
1
3
-1
4
-1/2
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