Soonhee drives along Melody Lane for 2.7km before she makes a 63° turn onto Harmony Street. She continues her drive on Harmony Street for 5.1 km before she realizes that she needs to return home on Bass Drive. So, she makes a turn from Harmony Street onto Bass Drive to get back home. The turning angle that Soonhee has to make from Harmony Street to Bass Drive to get home. Harmony Street A Melody Land

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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.