Saturday 25 January 2020
TRIGONOMETRY - PART - 44 - TRIGONOMETRICAL RATIOS - 100 PROBLEMS.
ICSE MATHS CLASS 9 – PAGE -294
EXERCISE – 22(B) – PROBLEM – 35
In triangle ABC, angle B = 90 degrees, AB = 40, AC + BC = 80. Find (i) sin A (ii) cos A (iii) tan C.
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