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,
I'm not sure if it's right, but I think the answer is 648.
Answer:
so the labelled angles are 30 and 90, but it only shows one 90. In fact there are 4 angles of 90. The marked 90 then the vertical angle and the complementary angles. All triangles equal 180 so the given 30 and 90 are taken from the 180.
180 -30-90= 60
But y is the opposite of the 30 which makes y=30
so that leaves x = 60
y=30 and x=60
Answer:
here what to do
Step-by-step explanation:
Since the volume of a cone is pi the radius squared times the height divided by 3. If you know the diameter,you simple divide by 2
1: establish the angles, basically label one x (the small one) and the other y (the bigger one)
2. supplementary angles add up to 180, so therefore you have the equation x + y = 180.
3. so y (the bigger one) is 8 less than 3 times the smaller one (x) therefore you come up with the equation y = 3x - 8
4. plug in the equation of the bigger one into the other equation
x + 3x - 8 = 180
(combine like terms)
4x - 8 = 180
5. solve the equation by adding 8 to 180, then by dividing by 4.
x should equal 47
6. plug in 47 into the x + y = 180 equation, subtract 47 from 180 and you end up with 133
i hope i explained it alright
