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### High School Mathematics - 210.10 Trignometry Ratios of Certain Specific Angles

 Directions: Answer the following questions. Also write at least 10 examples of your own.
 Q 1: If cos θ = 5/13, show that sec θ /(sin θ - tan θ) = 169/96Answer: Q 2: If 7 sin2 θ + 3 cos2 θ = 4, show that tan θ = 1/ų3Answer: Q 3: If tan A = ų2 - 1, show that sin A.cos A = ų2/4Answer: Q 4: If (cos A + 1)/sin A = 5, then show that cos A = 12/13Answer: Q 5: If tan A = 1/ų3, show that sin A.cos B + cos A.sin B = 1Answer: Q 6: If sin α = 3, prove that cos α. cosec &alphaα + tan α.secα = (16ų2 + 3)/8Answer: Q 7: If tan α = 2, prove that sin α.sec α + tan2α - cosec α = (12 - ų5)/2Answer: Q 8: If 7 sin A = 24 cos A, prove that 14 tan A + 25 cos A - 7 sec A = 30.Answer: Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!

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