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∠A is an acute angle in a right triangle. Given that sinA=725, what is the ratio for cosA? Enter your answer in the boxes

By Ruby

∠A is an acute angle in a right triangle. Given that sinA=725, what is the ratio for cosA? Enter your answer in the boxes as a fraction in simplest form

About the author
Ruby

There are two boys and two girls. A group of two members is to be formed. Find the probability that a group contains two boys.

Calculate the mean of the following data
Class intervel
1-3
3-5
5-7
Frequency
18
9
3​

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