Trigonometry

Solve the equation for solutions in the interval [0, 360). cos 2x= √3/2 Which is the correct answer? x = 15, 165, 195, 345 x = 30, 90, 150, 270 x = 0, 120, 180, 240 x = 105, 165, 285, 345

Solving Equation for a Given Interval

Solve the equation for the interval [0, 2л). sin^2 x - cos^2 x = 0 Which is the correct answer? x = л/4, л/3 x = л/4, 3л/4, 5л/4, 7л/4 x = л/4 x = л/4, л/6

Applications of Trigonometry and Vectors

1. Find the indicated part of each triangle ABC. C = 118°, b = 130km, a = 75km; find c. (See attachment for full questions)

Trigonometry

Determine whether the pair of vectors is orthogonal. Which is the correct answer? <-√7,2>, <7,√7> Yes or No.

Trigonometry

determine the number of triangles ABC possible with the given parts. Which is the correct answer? b = 24, c = 27, B = 49° 0 2 3 1