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The area A of a parallelogram, given two adjacent sides a, b and the angle C between them, is twice the area of the corresponding triangle.
So, use A = ab sin(C)
Why would you want to find x, the length of a diagonal? The area of a parallelogram is "base times height". here we can take the "base" to be the 100 m long side. The "height" is given by drawing a line from the top of the 70 m long side perpendicular to the 100 m side. The height is the leg of a right triangle, with hypotenuse 70, opposite the 70 degree angle.
I did not "belittle" you, I asked a serious question. I wanted to know your reasoning in this problem.Brother, if you are going to belittle my effort on every thread, I prefer that you simply skip my questions. This is easy to do.
I did not "belittle" you, I asked a serious question. I wanted to know your reasoning in this problem.