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What is the side length of side c if side a is 1cm side b is 3cm and angle C is 80 degrees?
Wiki User
∙ 12y ago
Use the cosine rule:-
c2 = 12+32 -2*1*3*cos(80)
c2 = 8.958110934
Square root both sides to find the value of c :-
Length of c = 2.993010346 or about 3cm
Wiki User
∙ 12y ago
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