Which of the following cables can transmit data at high

If tanθ – cotθ = a and cosθ + sinθ = b, then (b² –1)(a² + 4) = ?

If cot A = 12/5, then the value of (sin A + cos A) × sec A is ________.

The Value of (sin38˚)/(cos52˚) + (cos12˚)/(sin78˚) - 4cos²60˚ is

Sec A -Tan A = 1/16 then find the value of cot A =?

if x sin 45 ˚  = y cosec 30 ˚   then find the value of 

If sec a + tan a = 4, find the value of sin a. 

Simplify the following trigonometric expression: 

8 cos 40° cosec 50° − 2 cot 30° cot 60°