# Right triangle trigonometrics

Calculate the size of the remaining sides and angles of a right triangle ABC if it is given: b = 10 cm; c = 20 cm; angle alpha = 60° and the angle beta = 30° (use the Pythagorean theorem and functions sine, cosine, tangent, cotangent)

Correct result:

a =  17.3205 cm
C =  90 °

#### Solution:

$C=180-\left(60+30\right)=9{0}^{\circ }$

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