18) Use sum and difference formulas to find the exact value of the expression. cos 75°

Q: How many radians is 191°? Give the exact answer in simplest form

A:

Q: Use double- and half-angle formulas to find the exact value of the expression sin 22.5°.

A: Given: sin 22.5° To find: The exact value by using double and half-angle formula.

Q: Convert the angle -3π in radians to degrees.

A: To convert the given angle in degree.

Q: 13π/12 as the sum of two angles and evaluate the sine of the angle using the angle sum

A: Explanation and solutions is given below....

Q: 5) Find the exact values. Do not use a calculator. a. cos 60° + tan 45° – sin 30° b. csc- 4 + sin: 2

A:

Q: Use a half-angle formula to find the exact value of the expression sin 15°.

A: Consider the following formula:…

Q: Hilgen Hotel & Spa is located in beautiful Sydney, Australia. Hilgen operates three profit centers:…

A:

Q: ((-) arccos 21

A:

Q: Use a sum or difference identity to find the exact value, tan 105°

A:

Q: Find tan -75° without using a calculator. [?]-V] |

A:

Q: What are the steps on how to get the exact value of cos 90°?

A:

Q: Sketch the angle and write the sec and tan of the angle if the terminal side of the angle passes…

A: NOTE: Refresh your page if you can't see any equations. . the given point is so here we have

Q: Find each co-function. a) sin 18 b) tan 31° = c) cos(-종) 3: COS

A:

Q: What is the reference angle associated with cos 240o ?

A: Answer is- -1/2 Explanation is given below....

Q: Use a sum or difference formula to find the exact value of the expression sin 195°.

A: Calculation: The given expression is sin195°. Use the sum formula to find the value of the given…

Q: The angle addition formula for cosine is cos(a + 3) = cos a cos BF sin a sin 3. Use this formula to…

A: To find the value of given trigonometric expression

Q: What is the value of sin(330°)?

A: Our Aim is to tell the value of sin 330°=?

Q: Find the value of sec2 42° - cosec2 48°.

A: Given : sec242°-csc248° Concept: csc90-θ=secθ

Q: Find the exact value of cos105° using a half-angle formula. Show all work.

A:

Q: 2. Find the value of x 65° to 105°

A:

Q: I used a half-angle formula to find the exact value of cos 100°.Determine whether the statement…

A: Given:cos 100°

Q: 1-Convert from degrees to radians, in exact form. а-85° b- 395° c-(-120°) 2 Copvert oach angle from…

A:

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.