Basic Trigonometric Functions - Trigonometry - Socratic
3. Tangent, #tantheta# 4. Cotangent, #cottheta# 5. Secant, #sectheta# 6. Cosecant, #csctheta# Take the following triangle for example: Let the angle marked at A be #theta#. The longest side of the triangle is the hypotenuse, the side next to the angle is the adjacent and the side opposite to it is the opposite. Then, #sintheta =(opp)/( hyp)=a/h#
Half-Angle Identities - Trigonometry - Socratic
Trigonometry Trigonometric Identities and Equations Half ... cosine, and tangent of the angle #165^circ#? ...
Applying Trig Functions to Angles of Rotation - Trigonometry
Jan 5, 2015 · In mathematics, a unit circle is a circle with a radius of one. In trigonometry, the unit circle is the circle of radius one centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane. The point of the unit circle is that it makes other parts of the mathematics easier and neater.
Double Angle Identities - Trigonometry - Socratic
You would need an expression to work with. For example: Given #sinalpha=3/5# and #cosalpha=-4/5#, you could find #sin2 alpha# by using the double angle identity
What is Sine, Cosine and Tangent? - Socratic
Mar 31, 2018 · Sine, Cosine and Tangent are the names of three of the comparisons between the lengths of the sides of a right-angled triangle. Trigonometry deals with the sides and angles in triangles and the relationship between them. In a right-angled triangle, the sides are named according to the each of the acute angles, The longest side in the triangle is called the …
Graphing Tangent, Cotangent, Secant, and Cosecant
The best videos and questions to learn about Graphing Tangent, Cotangent, Secant, and Cosecant. Get smarter on Socratic.
Proving Identities - Trigonometry - Socratic
The functions sine, cosine and tangent of an angle are sometimes referred to as the primary or basic trigonometric functions. The remaining trigonometric functions secant (sec), cosecant (csc), and cotangent (cot) are defined as the reciprocal functions of …
Trigonometry topics and chapters - Socratic
Watch the best videos and ask and answer questions in 40 topics and 6 chapters in Trigonometry. Get smarter in Trigonometry on Socratic.
What is the sine, cosine, & tangent of 270 degrees? | Socratic
Oct 12, 2017 · sin(270^o) = -1, cos (270^0) = 0, tan (270^0)= undefined. Consider the unit circle (a circle with radius 1). On the unit circle as graphed on an xy coordinate plane, with 0 degrees starting at (x,y) = (1,0): graph{x^2+y^2=1 [-1, 1, -1, 1]} If we draw a line from the origin at the angle we seek, then where that line intersects the unit circle, the sin of the angle will be equal …
Trigonometric Functions of Any Angle - Trigonometry - Socratic
How do you evaluate the sine, cosine, and tangent of the angle θ = −10π/3 without using a calculator? What is the sine, cosine, & tangent of 270 degrees? How do you find the exact value of sin 105 degrees?