(4) Urgent.. please help me Please do not write nonsense as an answer to get points because I WILL report you..please? Answer all if you can bc it is a lot of points.

A)

B)

Step-by-Step Explanation:

A)

We want to determine tan(C).

Remember that tangent is the ratio of the opposite side to the adjacent side.

The opposite side according to Angle C is 12.

And the adjacent side is 10.

Therefore:

B)

We want to determine tan(X).

Again, according to Angle X, the opposite side is 5.

And the adjacent side is 11.

Therefore:

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:

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step-by-step explanation:

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