∠a is an acute angle in a right triangle. given that cosa=1213, what is the ratio for sina? enter your answer in the boxes as a fraction in simplest form.

is the answer.

Step-by-step explanation:

It is given that in a right angle triangle angle B is a right angle triangle and

Now we see in the figure attached Base(adjacent side) is 12 and hypotenuse is 13.

We have to find sina.

since

We will find the length of hypotenuse with the help of Pythagoras theorem.

BC = √(13²-12²) = √(169-144) = √25 = 5

Now from the given triangle

The correct option is

5/13

Step-by-step explanation: Just confirming the answer :)

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98