"use a calculator to approximate the given value to four decimal places" 1. cos 18 degrees 2. tan 72 degrees 3. sin 48 degrees tan 42 degrees sadcsa

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`1. cos18 = 0.95105651 ~~ 0.9511 `

`2. tan72 = 3.0776835 ~~ 3.0777 `

`3. sin48= 0.7431448 ~~ 0.7431 `

`4. tan42= 0.9004040 ~~ 0.9004`

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