Questions tagged 'Trigonometry'
44 questions
Solve 2cos^2x + cosx − 1 = 0 for x over the interval [0, 2 pi ).?
Could someone please help me solve the equation ( 2\cos^2x + \cos x - 1 = 0 ) for ( x ) in the interval ([0, 2\pi))? Here are the answer choices I am considering: a) ( \pi ) and ( \pi/3 ) b) ( \pi, \...
what is the reference angle of -13pi/3?
What is the reference angle for (-\frac{13\pi}{3})? Could you please explain the process involved in finding it?
tan θ = 12/5, π < θ < 3π/2 Find sin (θ/2)?
Given that ( \tan \theta = \frac{12}{5} ) and ( \pi < \theta < \frac{3\pi}{2} ), how can we find ( \sin\left(\frac{\theta}{2}\right) )?
An airplane flies with a velocity of 750. kilometers per hour, 30.0 o south of east. What is the magnitude?
An airplane is flying with a velocity of 750 kilometers per hour at an angle of 30.0 degrees south of east. What is the magnitude of the eastward component of the plane's velocity?