Answer to Question #191649 in Geometry for Angelo

Question #191649

If the sides of the parallelogram and an included angle are 6, 10 and 100 degrees respectively, find the length of the larger diagonal.

Expert's answer

let a=6, b=10, diagonal =d

"d^2=a^2+b^2-2abcos100^o=6^2+10^2-2\\times6\\times 10 cos100^o"

"d^2=36+100+20.76=156.76"

"d=\\sqrt{156.76}=12.52"

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