Sin cos tan
If cos y = 0.8, 0° ≤ y ≤ 90°, find the value of (4 tan y) / (cos y-sin y)
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- expression of a variable from the formula
- arithmetic
- square root
- planimetrics
- Pythagorean theorem
- right triangle
- circle
- triangle
- numbers
- fractions
- goniometry and trigonometry
- sine
- cosine
- tangent
- arccosine
Units of physical quantities:
Grade of the word problem:
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