Not yet answered if all digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 are rotated through a 180°, the digits 0, 1, and 8 do not change meaning, the digit 6 becomes 9, and 9 becomes 6. the remaining digits lose their meaning. a palidium is a positive whole number that remains the same after a 180° rotation (for example, 1691 or 8008). how many numbers between 1000 and (inclusive) are palidiums? marked out of 4 p flag question

step-by-step explanation:

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: