Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Solve the equation(2sin x-1)(2cos x+1)=0] within the interval [-180 <= x <= 180],[

Solve the equation\newline(2sinx1)(2cosx+1)=0(2\sin x-1)(2\cos x+1)=0 within the interval 180x180-180 \leq x \leq 180,

Full solution

Q. Solve the equation\newline(2sinx1)(2cosx+1)=0(2\sin x-1)(2\cos x+1)=0 within the interval 180x180-180 \leq x \leq 180,
  1. Set Factors to Zero: First, we set each factor in the equation to zero because if the product of two factors is zero, at least one of the factors must be zero.\newlineSo, we have 2sinx1=02\sin x - 1 = 0 and 2cosx+1=02\cos x + 1 = 0.
  2. Solve First Equation: Now, let's solve the first equation: 2sinx1=02\sin x - 1 = 0. Add 11 to both sides to isolate the term with \ ext{sin} x: 2sinx=12\sin x = 1.
  3. Find Angles for sinx\sin x: Next, divide both sides by 22 to solve for sinx\sin x: sinx=12\sin x = \frac{1}{2}.
  4. Solve Second Equation: We look for angles where the sine is 12\frac{1}{2}. These are x=30x = 30 degrees and x=150x = 150 degrees.
  5. Find Angles for cosx\cos x: Now, let's solve the second equation: 2cosx+1=02\cos x + 1 = 0. Subtract 11 from both sides to isolate the term with cosx\cos x: 2cosx=12\cos x = -1.
  6. Find Angles for cosx\cos x: Now, let's solve the second equation: 2cosx+1=02\cos x + 1 = 0. Subtract 11 from both sides to isolate the term with cosx\cos x: 2cosx=12\cos x = -1. Then, divide both sides by 22 to solve for cosx\cos x: cosx=12\cos x = -\frac{1}{2}.
  7. Find Angles for cosx\cos x: Now, let's solve the second equation: 2cosx+1=02\cos x + 1 = 0. Subtract 11 from both sides to isolate the term with cosx\cos x: 2cosx=12\cos x = -1. Then, divide both sides by 22 to solve for cosx\cos x: cosx=12\cos x = -\frac{1}{2}. We look for angles where the cosine is 12-\frac{1}{2}. These are x=120x = -120 degrees and 2cosx+1=02\cos x + 1 = 000 degrees.