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	If \( \sec (x+\alpha)+\sec (x-\alpha)=2 \sec x \), prove that \( \cos x=\pm \sqrt{2} \cos \frac{... (PW Solutions)  View
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	Q.no.1 exercise 7.1 trigonometric identities (Tech Plant Solution)  View
	If \( \cos x=\frac{\cos \alpha+\cos \beta}{1+\cos \alpha \cos \beta} \), prove that \( \tan \fra... (PW Solutions)  View
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	General solution of equation \( \sec ^{2} x+\operatorname{cosec}^{2} x+\cot ^{2} x-4 \cos ^{2} x... (PW Solutions)  View
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	tan x = n tan y u0026 Sin x = m sin y.Prove cos^x = m^2-1/ n^2 -1 (Binnus Classes)  View