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### High School Mathematics - 210.9 Trignometic Ratios and their Values

 Directions: Answer the following questions. Also write at least 10 examples of your own.
 Q 1: If tan A = 2, evaluate sec A.sin A + tan2A - cosec AAnswer: Q 2: if cos θ = 3/5, find the value of (sin θ tan θ - 1)/2 tan2θAnswer: Q 3: If cot θ = 1/Ö3, find the value of (1 - cos2θ)/2 - sin2θAnswer: Q 4: If sec θ = 13/5, evaluate (2 sin θ - 3 cos θ)/(4 sin θ - 9 cos θ)Answer: Q 5: if sec θ = 5/4, find (sin θ - 2 cos θ)/(tan θ - cot θ)Answer: Q 6: If sin B = 1/2, find 3 cos B - 4 cos3BAnswer: Q 7: If tan θ = a/b, find the value of the expression (cos θ + sin θ)/(cos θ - sin θ)Answer: Q 8: Evaluate (cosec θ - cot θ)/2 cot θ, when sin θ = 3/51/84/37/83/5 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!