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Hello so I had a question and the equation is 1/2 (10)(10)sin 60= but i got -15 but the awnser key says its 43.3 so im confused

 Mar 24, 2021
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not sure how you got a NEATIVE answer!

 

sin60  * 10     will give you the height of the triangle = 5 sqrt 3

 

then area =   1/2  10  *  5 sqrt 3 = 25 sqrt 3 = 43.3 cm 2

 Mar 24, 2021

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