cos(x) = ³/₅
cos⁻¹[cos(x)] = cos⁻¹(³/₅)
x ≈ 53.13
sin(2x) = sin[2(53.13)]
sin(2x) = sin(106.26)
sin(2x) = 0.960001
cos(2x) = cos[2(53.13)]
cos(2x) = cos(106.26)
cos(2x) = -0.27999657
tan(2x) = tan[2(53.13)]
tan(2x) = tan(106.26)
tan(2x) = -3.428617001
Product is the multiplication of numbers. The product of the (5x-11)² is (25x²-110x+121).
<h3>What is a Product?</h3>
A product is the multiplication of a number or expression to another expression.
We know in order to find the product of (5x-11)², we need to multiply each of the terms inside the bracket to each term in the second bracket. therefore, the solution of the problem can be given as,

Hence, the product of the (5x-11)² is (25x²-110x+121).
Learn more about the Product:
brainly.com/question/6966983
<span>In the equation of a straight line (when the equation is written as y = mx + b), the slope is the number "m" that is multiplied on the x, and "b" is the y-intercept. </span>
Answer:
79
Step-by-step explanation:
The SUM of ... 9. The sum of r and 45 is 79. 10. The quotient of x and 7 is equal to 13. r + 45 = 79.
The first bullet is : Expression with subtraction
Second bullet: Use formula 8(7-2.5) to solve