#triginometry stuff
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Do you know the law of sine and cosine as well that if you add all angles of a triangle that they equal 180
so what you usually do in these type of task is that you use the law of sine and cosine as well as the 180 degres thing to calculate the parts of a triangle that you dont know
for example you could use the 180 "rule" to get the angle A with the angles of C and E (triangle ECA)
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