Cosine - legs
Using the law of cosines, find the measurement of leg b if the givens are β=20°, a=10, and c=15.
Correct answer:
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Try conversion angle units angle degrees, minutes, seconds, radians, grads.
The Pythagorean theorem is the base for the right triangle calculator.
Cosine rule uses trigonometric SAS triangle calculator.
See also our trigonometric triangle calculator.
Try conversion angle units angle degrees, minutes, seconds, radians, grads.
You need to know the following knowledge to solve this word math problem:
- arithmetic
- square root
- planimetrics
- Pythagorean theorem
- triangle
- The Law of Cosines
- basic functions
- percentages
- goniometry and trigonometry
- cosine
Units of physical quantities:
Grade of the word problem:
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