By evaluating sin 15° + tan 23°/cos 35° x sin 55°, the answer up to four significant figures will be

  • 1.82
  • 1.018
  • 0.1018
  • 2.018

In a right-angled triangle XYZ with respect to X, the sine of the angle A is calculated as

  • opposite side/adjacent side
  • hypotenuse + adjacent side
  • adjacent side/hypotenuse
  • opposite side/hypotenuse

With respect to A in a right-angled triangle ABC, the side AC which is opposite to the right-angle is called

  • opposite side
  • hypotenuse
  • adjacent side + opposite side
  • adjacent side

The ladder leans against the wall at point B and makes an angles of 57° with the ground. If the height of the ladder is 8 m then the height of point B from the ground is

  • 6.71 m
  • 8.71 m
  • 9.71 m
  • 10.71 m

The sum of cos 45° and tan 38° is

  • 0.4884
  • 2.8484
  • 1.4884
  • 3.4884

Consider a right angle triangle ABC, if AB = x, BC = 15, AC = y and angle of A is 47° then the values of x and y respectively are

  • 15.08
  • 16.08
  • 17.08
  • 18.08

Considering a right-angled triangle ABC, if opposite side is '12' and adjacent side of triangle is supposed as 'x' then A 48° is

  • 15.31
  • 17.31
  • 18.31
  • 19.31

A ladder leans against the wall at the point B (window end) from a ground level and makes an angle horizontally at 52°. The height of ladder is 15 m. When the same ladder leans above the point B at point A (window start) and makes an angle of 85° horizontally. The distance between point A and point B is

  • 12.4 m
  • 5 m
  • 4.12 m
  • 3.12 m

Considering a right-angled triangle ABC, if opposite side is 'x' and adjacent side of triangle is equal to 20 then A 53° is

  • 23.46
  • 24.46
  • 26.54
  • 28.64

Consider a right angle triangle XYZ, XY = a, YZ = b, XZ = 25.6 and angle of X is 37° then the values of a and b respectively are

  • 19.604, 40.045
  • 18.604, 42.025
  • 17.406, 21.455
  • 15.406, 20.445

The sin P of triangle PQR with respect to P is calculated as

  • QR/PQ
  • QR/PR
  • PQ/PR
  • PR/PQ

A bundle of 10 balloons has string of 35 cm attached to it and makes and elevation angle of 40°. The distance of balloons from the holders hand is

  • 38.50 cm
  • 25.50 cm
  • 22.50 cm
  • 32.50 cm

The answer of sin 95.29° is

  • 0.7955
  • 0.9957
  • 0.5957
  • 0.5997

If sin A is 0.865 then the value of angle A (four significant figures) is

  • 85.59°
  • 59.88°
  • 62.88°
  • 88.62°

The height of a light house is 65 m. The angles of elevation and depression of the top and foot of a radar mast are 52° and 30° respectively. The height of radar mast is

  • 102 m
  • 305 m
  • 209.09 m
  • 109.09 m

The measurements such as length of book and width of glass sheet by using measuring tape are called

  • indirect measurements
  • direct measurements
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