tan 1˚ × tan 2˚× …………………….tan 88˚ × tan 89˚ = ?
If sin 23° = `12/13` , then tan 67° = ?
...The value of sec2 45˚ + 2 tan 135˚ is –
If Sinθ + Cosθ =√2 Cos(90 -θ ), then find the value of Cotθ ?
...What is the value of cosec30° sec30°?
The angle of depression of two ships from the top of a light house are 45º and 30º. if the ships are 120m on the opposite sides of li...