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OpenStudy (anonymous):
Prove 2sinx/sin(2x)+tanx/sinx=2secx
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OpenStudy (anonymous):
Use \(\Large \tan x = \frac{\sin x}{\cos x}\) and \(\sin 2x = 2 \sin x \cos x\)
OpenStudy (anonymous):
2sinx/sin2x +tanx/sinx= 2sinx/2sinx.cosx +sinx/cosx/sinx= secx+secx= 2secx
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