A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ∠ATC = 30° and ∠ACT = 48°,then what is the value
of ∠AOB ?
1). 78°
2). 96°
3). 102°
4). 108°
2. If tan(A - B) = 7/24 and tanA = 4/3, where A and B are acute, Find the value of (A + B)
3. If $0^{0} < A < 90^{0}$ , the value of $\frac{tan A - sec A -1}{tan A + sec A +1}$ is
4. A missile travels at 1422 km/h. How many metres does it travel in one second?
5. What is the value of $Sin 30^{0} - Cosec 45^{0}$?
6. What is the value of sin( – π/3) + cos( – π/6)?
7. What is the slope of the line parallel to the line passing through the points (-2, -1) and (4, -3)?
8. If cosec 45° - sin 30° = x, then x is
9. .If secθ = cosecф with 0 o < θ , ф < 90 o, then the value of sin (θ + ф) is