Keegan is in a hot air balloon 700 m above the ground. He observes his house at an angle of depression of 40 DEGREES . How far is he from his house?

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

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: