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While walking home one day Sam wondered how long it was from the bottom the bridge to the top on the other side.
Sam realized early that week he had learnt formulae on how to find missing sides of a Triangle but he didn't have any measurements.
He went up to the bridge and walked up and down it for 30 minutes trying to find a rough estimate of the length of the bridge.
He estimated the length to be 4 km and the angle to be 40 degrees. He then labeled the sides.
H . .
A
O .
He then picked from the three formulae he learnt SOH, CAH and TOA. He new he had O and A so he went with TOA.
H . .
A . .
O .
COS(40) = 4/HCOS(40)*H = 4/H*H4/COS(40) = H5.22 = HAfter he found it he was proud of himself.
H . .
A . .
. O .
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