2015 · Q45
If θ+θ=2, then θ is equal to
Elementary MathematicsTrigonometry
- A3/4
- B5/4
- C3/2
- D5/2
Explanation
(sec - tan)(sec + tan) = 1 gives sec - tan = 1/2; adding to sec + tan = 2 gives 2sec = 5/2, so tan = 2 - 5/4 = 3/4. Hence option (a).
If θ+θ=2, then θ is equal to
Explanation
(sec - tan)(sec + tan) = 1 gives sec - tan = 1/2; adding to sec + tan = 2 gives 2sec = 5/2, so tan = 2 - 5/4 = 3/4. Hence option (a).