Question

A right-angled triangle and two equations are shown below. All lengths are given

in metres.
a) Which equation is correct: equation A or equation B?
b) Use the correct equation from part a) to calculate the length u.
Give your answer in metres to 1 d.p.

Answer 1

B.

`\sin64 = ( (u)/(5.8) )`

Explanation:

Because (sin) is equal to opposite divided the hypotenuse so

`\sin64 = ( (u)/(5.8) )`

And to get (u) we will multiply 5.8 with sin(64)

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