Posted by **Kate** on Saturday, July 23, 2011 at 12:19pm.

Which of the following is a solution to the trigonometric equation

2cos2 x - 5cos x + 2 = 0?

A) 240 degrees

B) 135 degrees

C) 270 degrees

D) 90 degrees

## Answer this Question

## Related Questions

- Math - Four of the angles of a pentagon measure 85 degrees, 110 degrees, 135 ...
- Calculus - Find the exact values of the following. cos 270 degrees = 90 degrees...
- Math - What's the value of the missing angle *picture of a triangle and square ...
- Math - Which of the following is the measure of an acute angle? A. 180 degrees B...
- Trigonometry - Solve the equation cos^2A = sin^2A + sinA when 0¨¬¡ÂA¡Â360¨¬. ...
- Physics - Five Forces act on an object: 1. 60 N at 90 degrees 2. 40 N at 0 ...
- physics - Five forces act on an object: 1: 60 N at 90 degrees, 2: 40 N at 0 ...
- 6th grade math - Which expression could you use to find the measure of an angle ...
- Math - Find the approximate number of radians, to the nearest hundreth, in the ...
- math - find the angle that is coterminal to 525 degrees and lies between 0 ...