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Prove that \sqrt{\frac{1+cos30^\circ}{1-cos30^\circ}} = sec60^\circ + tan60^\circ (3 marks)\\If cos52^\circ = \frac{x}{\sqrt{x^2+y^2}}, then find the value of tan38^\circ (8 marks)\\If a+b \propto a-b, prove that a^2+b^2 \propto ab (3 marks)\\If A+B=90^\circ then prove that 1+tanA = cosec^2B (3 marks)

          Prove that \sqrt{\frac{1+cos30^\circ}{1-cos30^\circ}} = sec60^\circ + tan60^\circ (3 marks)\\If cos52^\circ = \frac{x}{\sqrt{x^2+y^2}}, then find the value of tan38^\circ (8 marks)\\If a+b \propto a-b, prove that a^2+b^2 \propto ab (3 marks)\\If A+B=90^\circ then prove that 1+tanA = cosec^2B (3 marks)

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Prove that √((1+cos30^∘)/(1-cos30^∘)) = sec60^∘+ tan60^∘(3 marks)
If cos52^∘= (x)/(√(x^2+y^2)), then find the value of tan38^∘(8 marks)
If a+b ∝a-b, prove that a^2+b^2 ∝ab (3 marks)
If A+B=90^∘then prove that 1+tanA = cosec^2B (3 marks)

Added by Sarah M.

Elementary and Intermediate Algebra

Alan S. Tussy, R. David Gustafson 5th Edition

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