Question

Sin130 + sin 10° тригонометрия​

Answer 1

Ответ:

Объяснение:

Sin130+sin10=cos140

Answer 2

To calculate the value of the trigonometric expression sin(130°) + sin(10°), you can use the trigonometric properties and the fact that sine is an odd function. Here's how you can do it:

1. Convert the angles to their reference angles in the first quadrant:

   • 130° is 180° - 130° = 50°
   • 10° remains as it is

2. Calculate the sine of the reference angles in the first quadrant:

   • sin(50°) ≈ 0.766
   • sin(10°) ≈ 0.174

3. Since sine is an odd function, sin(-x) = -sin(x), you can use this property to find the value of sin(130°):

   • sin(130°) = -sin(50°) ≈ -0.766

4. Now you can substitute the values into the original expression:

   • sin(130°) + sin(10°) ≈ -0.766 + 0.174 ≈ -0.592

So, approximately, sin(130°) + sin(10°) is equal to -0.592.