(cosec A – sin A)(sec A – cos A) = 1/(tan A + cot A)ġ0. Prove that: (cosec A – sin A)(sec A – cos A) = 1/(tan A + cot A) Using the identity cosec 2A = 1 + cot 2A ⇒ cosec 2A – cot 2A = 1, = (cot A – 1 + cosec A)/(cot A + 1 – cosec A) LHS = (cos A – sin A + 1)/ (cos A + sin A – 1)ĭividing the numerator and denominator by sin A, we get Prove that (cos A – sin A + 1)/ (cos A + sin A – 1) = cosec A + cot A, using the identity cosec 2A = 1 + cot 2A. If tan θ + sec θ = l, prove that sec θ = (l 2 + 1)/2l. If sin 3A = cos (A – 26°), where 3A is an acute angle, find the value of A. Prove that (sin 4θ – cos 4θ +1) cosec 2θ = 2 English Language and Comprehension Books PDFĢ.Reasoning General intelligence Books PDF.Mathematics Quantitative Aptitude Books PDF.Child Development and Pedagogy book pdf.Ancient, Medieval and Modern Indian History.UPSSSC Junior Assistant Book and Paper PDF.BARC Bhabha Atomic Research Centre Exam.Bihar BA Part 1 admission 2021 Graduation.CG Chhattisgarh general knowledge GK book PDF.Jawahar Navodaya Vidyalaya Entrance Exam Book PDF.UP Police Constable previous year paper PDF Download.DSSSB TGT PRT Previous year question paper.SSC Exam Preparation Books PDF Free Download.Best Novels to read to improve English pdf.Electronics and communications engineering book pdf.

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