Question
If ‘-’ stands for ‘division’,
‘+’ for ‘multiplication’, ‘÷’ for ‘subtraction’ and ‘×’ for ‘addition’, Which one of the following equations is correct?Solution
On replacing the signs in equation 1 21 ÷ 3 x 10 + 7 – 9 = 68
- If sin (2A − 3B) = (1/2) and cos (A + B) = (√3/2), where 0° < A, B < 90°, then find the value of ‘A’.
- If cosec [180° − (3q/2) ] = √2, 0° < q < 90°, then find the value of {(2/√3) X cos q - 4 cos 3q}.
Simplify the following trigonometric expression:
14 tan 25° cot 65° − 6 cos 39° sec 51°If sin θ = 3/5 and cos θ = 4/5, find the value of (2tan² θ + 3cot² θ).
Solve the following trigonometric expression:

If √3 tan 2θ – 3 = 0, then find the value of tanθ secθ – cosθ where 0 < θ < 90°
If cot A = 12/5, then the value of (sin A + cos A) × sec A is ________.
A man is standing at a point 20 meters away from a vertical tower. The angle of elevation from the point to the top of the tower is 60°. Find the heigh...
If Sin 3A = Cos (A - 46°) where 3A is acute angle, then the Value of A is
If (5sinx - cosx) = 2√2sinx, then find the value of 'tanx'