If 8sin2θ + 4cos2θ= 7 , 0° < θ < 90°, then the value of sec2θ will be:
Answer & explanation
Correct answer: option 4
θ = 60° satisfying the equation.
So, put θ = 60°
sec2θ = (2)2
= 4
If 8sin2θ + 4cos2θ= 7 , 0° < θ < 90°, then the value of sec2θ will be:
Correct answer: option 4
θ = 60° satisfying the equation.
So, put θ = 60°
sec2θ = (2)2
= 4