# How Do You Know Which Quadrant Is Positive Or Negative?

## Is Quadrant 4 positive or negative?

For an angle in the fourth quadrant the point P has positive x coordinate and negative y coordinate. Therefore: In Quadrant IV, cos(θ) > 0, sin(θ) < 0 and tan(θ) < 0 (Cosine positive). The quadrants in which cosine, sine and tangent are positive are often remembered using a favorite mnemonic.

## What quadrant is sin positive and tan negative?

Quadrants and the “cast” Rule In the first quadrant, the values for sin, cos and tan are positive. In the second quadrant, the values for sin are positive only. In the third quadrant, the values for tan are positive only.

## Which Quadrant is a B in if A is negative and B is positive?

If a and b are positive, (-x, y) should lie in the second quadrant so x and y should be positive too. If a and b are negative, (-x, y) should lie in the fourth quadrant so x and y should be negative too.

## Is the hypotenuse always positive?

As the hypotenuse is (x^2+y^2)^1/2 which will always have a positive value so hypotenuse is always positive.

## Which quadrant does the angle lie?

An angle in standard position is said to lie in a quadrant if its terminal side lies in that quadrant. In the figures below, apha lies in the 1st quadrant, β lies in the 2nd quadrant, γ lies in the 3rd quadrant and θ lies in the 4th quadrant.

## What is negative sine?

The negative -θ of an angle θ is the angle with the same magnitude but measured in the opposite direction from the positive x-axis. … When a point (a,b) is reflected in the x-axis, it moves to the point (a,-b). So Q also has coordinates (cos(θ),-sin(θ)).

## What quadrants are tan negative?

The tangent ratio is y/x, so the tangent will be negative when x and y have opposite signs. This occurs in the second quadrant (where x is negative but y is positive) and in the fourth quadrant (where x is positive but y is negative).

## Which quadrants are positive and negative on a graph?

The first quadrant is the upper right-hand corner of the graph, the section where both x and y are positive. The second quadrant, in the upper left-hand corner, includes negative values of x and positive values of y. The third quadrant, the lower left-hand corner, includes negative values of both x and y.

## What are the four quadrants?

The axes of a two-dimensional Cartesian system divide the plane into four infinite regions, called quadrants, each bounded by two half-axes. These are often numbered from 1st to 4th and denoted by Roman numerals: I (where the signs of the (x; y) coordinates are I (+; +), II (−; +), III (−; −), and IV (+; −).

## Why cosine of negative angle is positive?

Now the measure of the angle is -m, a negative value when measured clockwise is, because all angles have to be acute to apply the various trigonometrical ratios or relations. Hence, cosine of a negative angle changes into a positive value.

## What is a Quadrant 1?

This point is located in quadrant I. It is easy to distinguish where point located on coordinate plane without graph: 1) If both x and y are positive then this point is at quadrant I (it is upper-right quadrant). 2) If x is negative but y is positive then point is at quadrant II (this one is upper-left quadrant).