Tuesday 14 January 2020

TRIGONOMETRY - PART - 25 - TRIGONOMETRICAL RATIOS - 100 PROBLEMS

ICSE MATHS CLASS 9 – PAGE -294
EXERCISE – 22(B) – PROBLEM – 16
If 3 cos A = 4 sin A, find the value of:
(i) cos A (ii) 3 – cot ^2 A + cosec ^2 A.



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