IS triangle

Calculate interior angles of the isosceles triangle with base 40 cm and legs 22 cm long.

Correct answer:

α = β =  24.6 °
γ =  130.8 °

Step-by-step explanation:

$\alpha =\beta =\arccos ({\displaystyle \frac{40}{2\cdot 22}})=24.6\text{°}$

$\gamma =2\arcsin ({\displaystyle \frac{40}{2\cdot 22}})=130.8\text{°}$

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