find the answer for the followingz

Dear Student,

Let A be the aeroplane BD is the length of the river tan45°=ACBC 1=300BC BC=300m tan60°=ACCD 3 =300CD CD=3003×33      =1003      =1.732×100=173.2 width of river =BC+CD=300+173.2=473.2m


Regards

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