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COMEDK2014MathematicsTrigonometric Ratios & Identities

If (120-A)= (120-B) and 0 < A, B < then all values of A and B are given by

Options

  1. AA+B= 3
  2. BA=B or A+B= 3
  3. CA=B
  4. DA+B=0

Correct answer

B. A=B or A+B= 3

Step-by-step solution

Given, equation is (120-A)= (120-B) Since, sine is positive in II quadrant. Either 120-A=120-B A=B or 120-A=180-(120-B) 120-A=60+B A+B= 3

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