Evaluate the expression without using a calculator and write your answer in radians. arctan (-√3/3) =

Q: A = −2 cos² 0 − cos 24_Restrict to [0, 2m)

A:

Q: Simplify the inverse trigo functions y = arctan(cot4x)

A:

Q: Antonio boards a Ferris wheel at the 3-o'clock position and rides the Ferris wheel for multiple…

A: Consider the given question, Ferris wheel rotates at a constant angular speed of 7.1 radians per…

Q: solve x by using the law of cosine

A: We have been given the measurements of the right-angled triangle and the measurement of an angle and…

Q: 0=-2 cos -cos 20, Restrict to (0, 2)

A: The given equation is: 0=-2cos2θ-cos2θ Find the value of θ in the radian in the given interval.

Q: Jeremy boards a Ferris wheel at the 3- o'clock position and rides the Ferris wheel for multiple…

A:

Q: cos(920)

A: use trigonometric identity

Trigonometric Identities

Trigonometry in mathematics deals with the right-angled triangle’s angles and sides. By trigonometric identities, we mean the identities we use whenever we need to express the various trigonometric functions in terms of an equation.

Inverse Trigonometric Functions

Inverse trigonometric functions are the inverse of normal trigonometric functions. Alternatively denoted as cyclometric or arcus functions, these inverse trigonometric functions exist to counter the basic trigonometric functions, such as sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (cosec). When trigonometric ratios are calculated, the angular values can be calculated with the help of the inverse trigonometric functions.