Write the expression as the sine, cosine, or tangent of an angle.
A. tan
B. tan (5x - 3y)
C. tan (5x + 3y)
D. tan
Answer: B
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Find the equation of the line passing through the indicated two points in standard form.(-7, 6) and (0, -3)
A. 9x - 7y = 21 B. 13x - 3y = -9 C. -9x - 7y = 21 D. -13x + 3y = -9
Determine whether the equation is a function.y2 + x = 6
A. function B. not a function
Solve the system of linear equations. If the system has infinitely many solutions, describe the solution with an ordered triple in terms of variable z.x + 3y + 2z=114y + 9z=-12x + 7y + 11z=- 1
A. 
B. 
C. 
D. 
Solve the problem using the vector form v = 
[(cos ?)i + (sin ?)j].A ship sails first S100°E for 90 nautical mi and then N20°W for 150 nautical mi. How far is the ship from the starting point and in what direction?
A. 210 mi, N38.2°E B. 224 mi, N152°E C. 224 mi, S152°W D. 188 mi, N152°E