Q 1: The angle of elevation of the top of a tower which is yet incomplete at a point 120 metres from its base is 45^{o}. How much higher should it be raised so that the elevation at the same point may become 60^{o}? 100 metres 36.85 metres 87.84 metres

Q 2: In triangle ABC, a = 8.4 cm, b = 7.6 cm and c = 9.2 cm. Calculate the area of triangle ABC. 50 sq. cm 30 sq cm 45 sq cm

Q 3: The angle of elevation of the top of a tower from a point 60m from its foot is 30^{o}. Find the height of the tower. 100 m 20 m 203^{1/2} m

Q 4: Find the radian measure of 15^{o}. /4 /6 /12

Q 5: The sines of the angles of a triangle are in the ratio of 4:5:6, find the ratio of the cosines of the angles. 2:3:4 4:5:2 12:9:2

Q 6: Find the degree measure of 3/4. 42^{0}57^{l}18^{ll} 45^{o} 35^{o}

Q 7: If the shadow of a tower is 30 metres, when the sun's altitude is 30^{o}, what is the length of the shadow when the sun's altitude is 60^{o}? 200 metres 100 metres 240 metres

Q 8: The angles of a triangle ABC are in AP and b:c = 3^{1/2}:2^{1/2}. Find angle A. 60 degrees 45 degrees 75 degrees

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