Two sides of a triangle have lengths 9m and 13m. The angle between them is increasing at a rate of 0.02radians /min. How fast is the length of the third side increasing when the angle between the sides of fixed length is π/3radians.

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)

a is the correct