TS EAMCET · Maths · Trigonometric Equations
The number of solutions of the equation and lying in the interval is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Given trigonometric equation is, tanθ+secθ=2cosθ ⇒sinθcosθ+1cosθ=2cosθ ⇒1+sinθ=2cos2θcosθ≠0;θ≠π2,3π2 in 0,2π ⇒1+sinθ=21-sin2θ ⇒2sin2θ+sinθ-1=0…
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