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Solution 4.2:1a
From Förberedande kurs i matematik 1
The definition of the tangent states that
In our case, this means that
=x13
which gives
\displaystyle x=\text{13}\centerdot \text{tan 27}^{\circ }.
NOTE: Using a calculator, we can work out what \displaystyle x\text{ } should be:
\displaystyle x=\text{13}\centerdot \text{tan 27}^{\circ }\approx 6.62