What is sin180-x?

sin(180-x) is equal to sin(x). This is because the sine function is symmetric about the line y=90 and x-axis, which means that at the angle (180-x), the sine value is equal to the sine value at angle x. This property is called the co-function identity of sine.

For example, sin(180-30) is equal to sin(150), which is 0.5, and sin(30) is also equal to 0.5. Similarly, sin(180-45) is equal to sin(135), which is approximately 0.707, and sin(45) is also equal to approximately 0.707.

Therefore, we can use the co-function identity of sine to simplify trigonometric expressions and equations involving sin(180-x).