Thus, cos ɸ is the ratio of the leg adjacent to ɸ and the hypotenuse, and sin ɸ is the ratio of the leg opposite ɸ and the hypotenuse. The arc AB of the circle is called the first quadrant of the circle, and the arcs BA’, A’B’, and B’A are called the second,...
The sine function is negative in the third and fourth quadrants. The tangent function is positive in the first and third quadrants. The set of solutions forθθare limited to the third quadrant since that is the only quadrant found in both sets. ...
In the second quadrant (90° to 180°), sin and csc are positive and other trigonometric ratios are negative. In the third quadrant (180° to 270°), tan and cot are positive and other trigonometric ratios are negative. In the fourth quadrant (270° to 360°), cos and sec are positiv...
百度试题 结果1 题目【题目】Decide in which quadrant θ lies and state whether sin θ, cos θ and tan are positive or negative.θ=221° 相关知识点: 试题来源: 解析 【解析】quadrant 3 sin @ negalive cos @ negaive tan @ posive
First quadrant: sine and positive cosine Second quadrant: positive sine and negative cosine Third quadrant: sine and negative cosine Fourth quadrant: negative sine and positive cosine Answer and Explanation: Given {eq}\cos \t...
5 6 cos θ = ± 5 6 . to determine which sign we should use, we use the unit circle and see that sine is positive in two quadrants, the first and the second. since all angles in the first quadrant are positive, that means we are working with the second quadrant (all angl...
Also known as the Sin Cos Tan Calculator, this app is specifically designed to help you find the value of sides, angles, and the area of a Right Angled Triangle. Major Components of Trigonometry SIN COS TAN Triangle Area Calculator: Right Triangle Solver: Calculate side lengths, area, ...
in the unit circle. the reference angle is formed when the perpendicular is dropped from the unit circle to the x-axis, which forms a right triangle. since, the angle 150 degrees lies on the iind quadrant, therefore the value of sin 150 is positive.the internal angle of triangle is 180...
Ifsin(θ)=779andθis in the 2nd quadrant, find the exact value ofcos(θ). Question: Ifsin(θ)=779andθis in the 2nd quadrant, find the exact value ofcos(θ). Trigonometry: Trigonometry is an important part of mathematics that is applied to fi...
We can determine the values of sine function as positive or negative depending upon the quadrants. Here is a table where we can see that on one hand sine 270 is negative and on the other hand sine 90 is positive. Basically, for the first and the second quadrant, it is positive and for...