Use a trigonometric equation to determine the leg of this triangle C=90°
A=30°
c=10m

What is a?
​

5

Explanation: B is for sure 60°, c* cosB = 10*1/2 =5

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.