Write the ratios for sin A and cos A.
5
4
B
13

sin A = 3/5

cos A = 4/5

Step-by-step explanation:

For angle A, the opposite leg is BC with length 3.

For angle A, the adjacent leg is AC with length 4.

The hypotenuse is AB with length 5.

sin A = opp/hyp

sin A = 3/5

cos A = adj/hyp

cos A = 4/5

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

14

step-by-step explanation: