Simplify the expression
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The trigonometric ratios sine and secant are reciprocals of each other

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog