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How would you explain how to find sine and cosine within each quadrant of a unit circle?
Wiki User
∙ 14y ago
To find the sin/cos at a given point on the unit circle, draw a radius to that point. Then break the radius into components - one completely horizontal and one completely vertical. The sine is the vertical component, the cosine is the horizontal component.
Wiki User
∙ 14y ago
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How is a tangent different from a chord?
A tangent is a straight line that touches the outside circumference of a circle at one point whereas a chord is a straight line within a circle that spans its circumference.
Do I need to learn algebra before trigonometry?
YES! If you can't do algebra, you won't last ten seconds in trigonometry. It basically is algebra, just using equations within equations.
How much rain fell in Cyclone Tracy in Darwin?
When Cyclone Tracy hit Darwin on Christmas Day 1974, 255mm of rain was dumped on the city within a twelve hour period.
What is the point of graphing a trig function (sin cos etc.)?
The functions are periodic and so, given any value (within the range) the function can take the value several times, Graphing the function can help you determine secondary points at which the function takes a given value.
Why the value of tan A is always less than one?
The values of tan are limitless (that is to say, within [-inf, inf]). However, sin and cos ratios are between -1 and 1. Think about it: sin = opposite/hypotenuse. Since hypotenuse is always larger than or equal to opposite, sin must always be less than 1. Same with cos.
What do you call a quadrant within a circle?
A quarter of a circle or a quadrant!
Which circles lie completely within the fourth quadrant?
A circle with centre (x0, y0) and radius r has the equation of:(x -x0)² + (y - y0)² = r²By writing the equation of any circle in this form its centre and radius can be determined.To completely lie within a quadrant, the centre of the circle must be more than r away from the y- and x-axes:In the first quadrant if: x0 > r and y0 > rIn the second quadrant if: x0 < -r and y0 > rIn the third quadrant if: x0 < -r and y0 < -rIn the fourth quadrant if: x0 > r and y0 < -rIf either x0 or y0 (or both) is exactly r away from the y- or x-axis then the circle is on boundary between quadrants, and if either x0 or y0 (or both) is less than r away from the y- or x-axis, then the circle is in more than one boundary.f x0 < r from the y-axis then the circle is in quadrants I and II, or y0 < r from the x-axis then the circle is in quadrants III and IV; if both less than r away from their respective axes, the the circle is in all four quadrants.
What is a circle within a circle within a circle called?
A target
What do you call a circle within a circle?
Concentric Circles?
The oval is around or within the circle?
Within the circle
What is a nested circle diagram?
a circle within a circle within a circle decrealsing in size every time
What if there is no x or y-intercept?
Then it could be a straight line segment within a quadrant
How do you find the angle of a triangle within a circle segment?
You can find the angle of a triangle within a circle segment using the circle theorems.
How was the term cosine created?
It is the complement to the sine, and the opposite relationship within a triangle in regards to the Pythagorean Theorem.
What is are the points in a a circle?
The points in a circle are just points in a circle. Also, a plane cannot be within a circle because planes go on forever in all directions, so a circle can be within a plane.
Can a triangle be inscribed in a circle?
Yes. Any triangle can be inscribed within a circle, although the center of the circle may not necessarily lie within the triangle.
Area enclosed within the central angle of a circle and the circle?
Area of a sector of a circle.
