Question

3) cos90° - 3sin360° + 2tg180°? ​

Answer 1

Ответ: 0, см фото.

Объяснение:

Answer 2

3)+cos90°: cos90° represents the cosine of 90 degrees. In a unit circle, at 90 degrees, the x-coordinate of the point is 0. Therefore, cos90° = 0.

- 3sin360°: sin360° represents the sine of 360 degrees. In a unit circle, at 360 degrees, the y-coordinate of the point is 0. Therefore, sin360° = 0.

Multiplying 0 by -3 gives us -3sin360° = 0.

+ 2tg180°: tg180° represents the tangent of 180 degrees. In a unit circle, at 180 degrees, the y-coordinate of the point is 0. However, the x-coordinate is -1. Therefore, tg180° = 0 / -1 = 0.

Adding all the values together, we get:

3) + cos90° - 3sin360° + 2tg180° = 3 + 0 - 0 + 0 = 3.