Question

Вычислить cos7800??????​

Answer 1

Ответ:

-0,839)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

Ответ:

-0,839432(приближённое значение) ближе вычислить невозможно

Объяснение:

Answer 3

To calculate cos(7800 degrees), we first need to convert the angle from degrees to radians since trigonometric functions in most programming languages and calculators expect angles in radians.

The formula to convert degrees to radians is: radians = degrees * (π / 180)

Let's proceed with the calculation:

1. Convert 7800 degrees to radians: radians = 7800 * (π / 180) = 7800 * (3.14159265359 / 180) ≈ 136.275 * π

2. Use the trigonometric identity cos(x) = cos(x - 2 * π * n), where n is an integer, to find an equivalent angle in the range [0, 2 * π]:

Since 136.275 * π is greater than 2 * π, we can find an equivalent angle by subtracting 2 * π (approximately 6.28318530718) from it repeatedly until it lies within the range [0, 2 * π].

Equivalent angle in the range [0, 2 * π] ≈ 136.275 * π - 2 * π ≈ 0.275 * π

3. Calculate the cosine of the equivalent angle: cos(0.275 * π) ≈ cos(0.275 * 3.14159265359) ≈ cos(0.86752395923) ≈ 0.64411967623

So, cos(7800 degrees) ≈ 0.64411967623.