About Lesson
$$
{text{If Cot }}A{text{ }} = frac{7}
{8}{text{, Evaluate : }}frac{{(1 + sin A)(1 – sin A)}}
{{(1 + cos A)(1 – cos A)}}
$$
Exercise 1 – Trigonometric Ratios
Concept 1 : Explanation of all 6 Trigonometric Ratios
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Exercise 2 – Trigonometric Tables
Exercise 2 - Trigonometric Tables
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