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In abc, right angled at b, if ab 12 cm and bc 5 cm, find i sin a and tan a ii sin c and cot c. It will help you to solve the trigonometry questions. The ncert solutions to the questions after every unit of ncert textbooks aimed at helping students solving difficult questions for a better understanding of this chapter, you should also see summary of chapter 8 introduction to trigonometry. Trigonometric formulas for class 10, trigonometric formulas for class 11.
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