I was in Sydney in 2003 and, while walking across the Sydney Harbour Bridge, I took this photo of the Opera House. The picture was made from about the same height as the top of the highest sail. I made this picture from a point about 500 m horizontally from the Opera House, and, as we can see from the photo, the waterline below the highest sail has an angle of depression of about 8°. Based on this information, can you find how high above sea level is the Opera House's highest sail?
Ratios
A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.
Trigonometric Ratios
Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.
I was in Sydney in 2003 and, while walking across the Sydney Harbour Bridge, I took this photo of the Opera House. The picture was made from about the same height as the top of the highest sail.
I made this picture from a point about 500 m horizontally from the Opera House, and, as we can see from the photo, the waterline below the highest sail has an angle of depression of about 8°. Based on this information, can you find how high above sea level is the Opera House's highest sail?
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