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2 November, 15:24

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin (a+b)

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  1. 2 November, 16:09
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    38/45. 49 + 25 = (4 * 5) + (2 * 9) 9 * 5 = 38 / 45
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