I used a half-angle formula to find the exact value of cos 100°.Determine whether the statement makes sense or does not make sense, and explain your reasoning.

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: Find the value 3 csc 20° – sec 20°

A: we have to find the value of the following

Q: Convert the angle -105° in degrees to radians. Express your answer as a multiple of π.

A: Given angle in degree is -105o

Q: The town of Plainfield is 4 miles east and 6 miles north of Burlington. Allentown is 8 miles west…

A:

Q: Determine whether the statement, "The bearing from O to B is E 70° S", makes sense or does not make…

A: Given that bearing is E70° S. Here the bearing is measured from north to south line.

Q: You want to measure the height of an antenna on the top of a 125-foot building. From a point in…

A:

Q: Determine whether the statement "When solving an SSA triangle using the Law of Sines, my calculator…

A:

Q: Find the measure of cos-1 (-0.5) in degrees and radians.

A: cos-1-0.5

Q: when should you use radians and degrees

A:

Q: Convert 1.2 in radians to degrees:

A: Given: The angle in radians is 1.2. To find: Value of the angle in degrees. Concept used: The…

Q: 1 n to degrees: 9. Convert Convert 8° to radians:

A: To convert into degrees

Q: To estimate the height of a building, two students find the angle of elevation from a point (at…

A:

Q: Drag the tiles to the boxes to form correct pairs. Not all tiles will be used. Match each sine or…

A: sin(90° - ∅) = cos(∅)cos(90° - ∅) = sin(∅)

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.