Tuesday 14 January 2020
TRIGONOMETRY - PART - 21 - TRIGONOMETRICAL RATIOS - 100 PROBLEMS
ICSE MATHS CLASS 9 – PAGE -294
EXERCISE – 22(B) – PROBLEM – 12
Given: 4 sinꝊ = 3 cosꝊ; find the value of
(i) sinꝊ
(ii) cosꝊ (iii) cot^2 Ꝋ - cosec^2 Ꝋ
(iv) 4 cos^2 Ꝋ - 3 sin^2 Ꝋ + 2
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