TRIGONOMETRY Ex. 8.1

Trigonometry ratios    • Trigonometric Ratios   Exercise 8.1, 1. In ∆ ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine : (i) sin A, cos A (ii) sin C, cos C 2. In Fig. 8.13, find tan P – cot R. 3. If sin A = 3/4 calculate cos A and tan A. 4. Given 15 cot A = 8, find sin A and sec A. 5. Given sec θ = 13 /12 calculate all other trigonometric ratios. 6. If ∠ A and ∠ B are acute angles such that cos A = cos B, then show that ∠ A = ∠ B. trigonometric ratios, pythagoras, hypoyenuse, perpendicular, base, right angled triangl, If ∠ A and ∠ B are acute angles such that cos A = cos B,then show that ∠ A = ∠ B.,Trigonometric ratio