Given the right triangle ABC, where A=90 degrees, calculate the expression: E=cosB/sinC+ cosC/sinB
We have a right triangle with A = 90 degrees and we have to calculate cos B / sin C + cos C / sin B
Let's take the sides opposite angle A as a, that opposite angle B as b and that opposite angle C as c.
cos B / sin C + cos C / sin B
=> [(c / a)/(c/ a)] + [(b/a)/(b/a)]
=> 1 + 1
The expression = 2.
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