Exactly what part of "Find sin 2t" do you not understand?palui123 said:Homework Statement
t = tetha
FInd sin 2t when cos t = 4/5
Homework Equations
no idea
The Attempt at a Solution
no. . . . btw what should I do 1st? I don't understand this question
If by "aiding you" you mean, show you the work + answer, then NO, WE CAN'T DO THAT. Read the forum rules. Otherwise, I think I gave you sufficient aid in my post (#2).palui123 said:I'm talking by myself T-T ask = me , answer = me T-T . AID ME NEXT TIME PLEASE. . . .
A trigonometric formula is a mathematical expression that relates two or more trigonometric functions. It can be used to solve for unknown values in a triangle or to simplify complex trigonometric expressions.
On the other hand, a trigonometric identity is an equation that is always true for all values of the variable. It is used to prove other trigonometric equations and to simplify expressions by replacing them with equivalent identities.
Some commonly used trigonometric identities include the Pythagorean identities (sin²θ + cos²θ = 1), the double angle identities (sin2θ = 2sinθcosθ), and the reciprocal identities (cscθ = 1/sinθ). Other important identities include the sum and difference identities, the half angle identities, and the co-function identities.
Trigonometric identities can be used to simplify equations by replacing complex expressions with simpler ones. This can help in solving for unknown values and in proving that two expressions are equal. For example, if an equation contains both sine and cosine, we can use the identity sin²θ + cos²θ = 1 to simplify the equation and solve for the unknown value.
The unit circle is a circle with a radius of 1 centered at the origin of a coordinate plane. It is used to define the values of trigonometric functions for any angle in terms of the coordinates of the point where the angle intercepts the circle. This is the basis for many trigonometric formulas and identities, as they are derived from the relationships between the sides and angles of a right triangle inscribed in the unit circle.
Trigonometric formulas and identities are used in a wide range of fields, including engineering, physics, and astronomy. They can be used to calculate distances, angles, and heights in real-world applications such as surveying, navigation, and satellite communications. They are also used in the design and analysis of structures, machines, and electronic circuits that involve periodic functions.