Cosine
Cosine and sine theorem:
Calculate all unknown values (side lengths or angles) from triangle ABC.
c = 2.9 cm; β = 28°; γ = 14° α =? °; a =? cm; b =? cm
Calculate all unknown values (side lengths or angles) from triangle ABC.
c = 2.9 cm; β = 28°; γ = 14° α =? °; a =? cm; b =? cm
Correct answer:

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Our percentage calculator will help you quickly and easily solve a variety of common percentage-related problems.
Do you want to convert length units?
Do you want to convert time units like minutes to seconds?
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:
- algebra
- expression of a variable from the formula
- planimetrics
- triangle
- The Law of Cosines
- The Law of Sines
- basic functions
- percentages
- numbers
- fractions
- goniometry and trigonometry
- sine
- cosine
Units of physical quantities:
Grade of the word problem:
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