You can use the Law of Sines here. (sina/A=sinb/B=sinc/C)
x/sin76=55/sin56
x=55sin76/sin56
x≈64.4 units (to nearest hundredth of a unit)
Answer:
15% of $68 is $10.2
$68 + $10.2 = $78.2
The retail price is $78.20
It would equal 1,000 because you would have to multiply 10 3 times 10 to the 3rd power = 10 x 10 x 10
It is a right angled triangle
The angles in every triangle have to add up to 180, as two of the angles are 60 and 30 the third angle has to be 90
Hope this helps :)