Engineering Board Exam Reviewer · Trigonometric Identities · easy

EE Board October 1991: The sine of a certain angle is 0.6, calculate the cotangent of the angle.

  1. 4/3
  2. 5/4
  3. 4/5
  4. 3/4

Answer

A. 4/3

Solution

=0.6= 35, so = 45 (3-4-5 triangle). = / =4/5/3/5= 43.

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