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Mathematics
Carmelo Peck
7 May, 14:23
If sinx=2cosx then, what is the value of sin2x?
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Ramiro Braun
7 May, 17:23
0
sin (x) = 2cos (x)
tan (x) = 2
tan⁻¹[tan (x) ] = tan⁻¹ (2)
x ≈ 63.4
sin (2x) = sin[2 (63.4) ]
sin (2x) = sin (126.8)
sin (2x) ≈ 0.801
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