Which of the following diagrams correctly represents the path of a light ray incident parallel to the principal axis after refraction through the lens?
Refer to the following letter and symbol series and answer the question.
(Left) E # R & H & @ J & M N # B & V && D # P @ W % & Q & A % & # E & (Right)
If all the symbols are dropped from the series, which of the following will be third from the left?
Let 0° < θ < 90°.\(\mathrm{\sqrt{\frac{\sec^{2}\theta+\mathrm{cosec}^{2}\theta}{\tan^{2}\theta-\sin^{2}\theta}}\times\frac{(1+\tan^{2}\theta)\sin^{2}\theta}{(\mathrm{cosec}\theta-\cot\theta)(1+\cos\theta)}}\) Is equal to :
