Write the ratios for sin a and cos a

Trigonometry ratios are used to represent lengths of a right-angled triangle.

The ratios for sin A and cos A are 3/5 and 4/5

Sine ratio is calculated as:

So, we have:

Cosine ratio is calculated as:

So, we have:

Hence, the ratios for sin A and cos A are 3/5 and 4/5

Read more about trigonometry ratios at:

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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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