Answer:
or exact is −0.70710678...
Step-by-step explanation:
Getting the point!
- If we look at the unit circle and we find
we see it is in the 3rd quadrant. - We know that all points in the 3rd quadrant have both negative x and negative y values.
- We know that all radians with the base of 4 on the unit circle have the points of
- Because we are in the 3rd quadrant and both x and y are negative we know the point of is
Finding the sin!
- Because we know that sin is asking us for the y value
- We can just look at the point and find the y value!
- the y value is
- Because this fraction does not need to be rationalized we are good!
- Use a calculator to find the exact value and you get -0.70710678...
- The final answer is or exact is −0.70710678...
Hope this helps!! Please mark Brainliest!
Answer:
75, 77
Step-by-step explanation:
Let the first odd number = 2x -1
Let the second odd number = 2x + 1
2x - 1 + 2x + 1 + 18 = 170 Combine like terms on the left.
4x + 18 = 170 Subtract 18 from both sides.
4x = 170 - 18 Combine like terms on the right
4x = 152 Divide by 4
4x/4 = 152/4
x = 38
2 * 38 - 1 = 75
2 * 38 + 1 = 77
Answer:
Step-by-step explanation:
The total length of triangle is 40 in. The length of the right triangle is the total length divided by 2 which 40/2 = 20.
We have 2 right triangles. We can use the pythagorean theorem to solve for x.
a^2 + b^2 = c^2
x^2 + 20^2 = 25^2
x^2 + 400 = 625
- 400 - 400
x^2 = 225
x = 15
I know that from least to greatest is C
The decimal as a percent is A
36% as as a fraction is C
8% as a decimal is A
7/8 as a percent is B
