Use the Half-Angle Identities to have an exact value for each of the following (use simplified fractions, no decimals!). Assume all angles are in the first quadrant. (a) cos A = 23/49 cos(A/2) = (b) cos A = 31/81 sin(A/2) = %3D (c) cos A = 48/73 tan(A/2) = %3D

Q: sin120o = ..............,cos240 o =...................

A:

Q: Find csc-1(4.3) (in radians).  (Hint: Use sin-1)

A:

Q: Determine? cos 3x.dx

A: Given integral ∫cos(3x) dx, solve using the properties of indefinite integrals ∫cos(ax)dx=…

Q: find sin F for the triangle

A: Sine F is the ratio of perpendicular to hypotenuse with respect to the angle F.

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

A: cos-1-0.5

Q: Evaluate the following expressions. Your answer must be an exact angle in radians and in the…

A: Given Data The interval of angle is [-π/2, π/2]   (a) The expression of angle is θ=tan-1(√3/3).…

Q: If cos θ = 3/4, what is cos2θ?

A:

Q: Simplify : cos (2 pi / 3) cos (pi / 6) + sin (2 pi / 3) sin (pi / 6)

A: Trigonometric identity: The following trigonometric identity is used in solving the given problem.…

Q: 9tx 81-18

A: Since you have asked multiple questions in a single request so we will be answering only first…