This in turn produces an unusual independence of mind, freeing the INTJ from the constraints of authority, convention, or sentiment for its own sake. INTJs are known as the Systems Builders of the types, perhaps in part because they possess the unusual trait combination of imagination and reliability.
Step 2 Use SOHCAHTOA to decide which one of Sine, Cosine or Tangent to use in this question. Step 3 For Sine calculate Opposite/Hypotenuse, for Cosine calculate Adjacent/Hypotenuse or for Tangent calculate Opposite/Adjacent. Step 4 Find the angle from your calculator, using one of sin-1, cos-1 or tan-1.
1 To find sin (x/2), we use the following half angle formula. 2  sin (x/2) = + or-SQRT [ (1 - cos x) / 2 3  ]. sin (x/2) = SQRT [ (1 - cos x) / 2 4  ]. Given that sin (x) = 1 / 4, we use the trigonometric identity sin x + cos x = 1 to find cos x, noting that x is in quadrant 2 and cos x is negative.uestions 2: x is in quadrant 3, approximate sin (2 x) if cos (x) = - 0.2. Round your answer to two decimal places. Solution to Question 2: 1  sin (2x) may be calculated using the double angle trigonometric identity. 2  sin (2x) = 2 sin (x) cos (x).