Question

in a class of 20 boys and 12 girl the average of age the whole class is 14 years and the average age of the boys 14 years 2 month find the average age of the girls ​


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Answer 1

Answer:

f 3 cot A = 4, check whether (1 – tan2A)/(1 + tan2A) = cos2 A – sin2 A or not.​

Step-by-step explanation:

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