What is the value of sec(30°)? (2015)

Practice Questions

Q1
What is the value of sec(30°)? (2015)
  1. √3/2
  2. 2/√3
  3. 2
  4. √3

Questions & Step-by-Step Solutions

What is the value of sec(30°)? (2015)
  • Step 1: Understand that sec(30°) means the secant of 30 degrees.
  • Step 2: Recall that secant is the reciprocal of cosine. So, sec(30°) = 1/cos(30°).
  • Step 3: Find the value of cos(30°). It is known that cos(30°) = √3/2.
  • Step 4: Substitute the value of cos(30°) into the equation: sec(30°) = 1/(√3/2).
  • Step 5: To divide by a fraction, multiply by its reciprocal: sec(30°) = 1 * (2/√3).
  • Step 6: This simplifies to sec(30°) = 2/√3.
  • Step 7: To express this in a simpler form, multiply the numerator and denominator by √3: sec(30°) = (2√3)/(√3*√3) = 2√3/3.
  • Step 8: However, the original solution states sec(30°) = √3, which is incorrect. The correct value is 2/√3 or 2√3/3.
No concepts available.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely