the cosine of an angle is the ratio of the length of the leg_______that angle to the length of the _________.?help please
1 answer:
Answer:
The cosine of an angle is the ratio of the length of the leg adjacent to the angle to the length of the hypotenuse.
Step-by-step explanation:
- In a right angled triangle, the cosine of an angle is the length of the adjacent side divided by the length of the hypotenuse.
- Also it is the sine of the complementary angle.
- The abbreviation is cos
- The longest side of the triangle is called the hypotenuse,
- The side opposite the angle theta is called the opposite side,
- The third side is called the adjacent side.
- Therefore,
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Answer:
The question is incomplete, the complete question is Angela makes a pillow in the shape of a wedge to use for watching TV. The pillow is filled with 12 ft³ of fluffy material. The base is 3 ft, the height is 2 ft, what is the length of the pillow?
The length of the pillow is 4 feet
Step-by-step explanation:
The formula of the volume of the wedge is , where
- b is the base of it
- h is the height of it
- l is the length of it
∵ The pillow in the shape of a wedge
∵ The pillow is filled with 12 ft³ of fluffy material
∴ The volume of the wedge = 12 ft³
∵ The base = 3 feet
∵ The height = 2 feet
- Use the formula of the volume above to find its length
∵
∴ V = 3 l
∵ V = 12 ft³
- Equate 3 l by 12
∴ 3 l = 12
- Divide both sides by 3
∴ l = 4 feet
∴ The length of the pillow is 4 feet