Quantitative Aptitude - Arithmetic Ability Questions

If θ>0, be an acute angle, then the value of it in degrees satisfying cos2θ-3cosθ+2sin2θ=1 is

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

A missile travels at 1278 km/h. How many metres does it travel in one second?

√[(1 ­ sinA)/(1 + sinA)] is equal to?

If a3 + 3a2 + 9a = 1, then what is the value of a3 + (3/a)?

What is the value of (sinA -­ 2sin3A)/(2cos3A -­ cosA)?

If 14.35 - (1.956 - x ) - 83.92 = 3.858 then what is the value of x?

If one angle of a triangle is equal to half the sum of the other two equal angles, then the triangle is