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anonymous
 5 years ago
in tirangle ABC, a=8 b=9 and m of angle C = 135 what is the area of ABC
anonymous
 5 years ago
in tirangle ABC, a=8 b=9 and m of angle C = 135 what is the area of ABC

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if you mean a is the side opposite point A and b the side opposite point B: draw the triangle then extend side b past point C. Now draw a line perpendicular to the extended side b starting at point B. Now you have a 454590 right triangle with hypotenuse BC=8. So the base and height of that triangle is 8/sqrt(2). Now find the Area of the big right triangle with hypotenuse BA. This is: (1/2)*(9+8/sqrt(2))*(8/sqrt(2))=36/sqrt(2)+32/sqrt(2)=68/sqrt(2) Area of smaller right triangle hypotenuse BC. (8/sqrt(2))^2*1/2=16 subtract the smaller area from the total to find the area you want. 68/sqrt(2)16=34sqrt(2)16 A=34sqrt(2)16
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