Question

48. If tan e-cot 0 = 1 then tan- + cot0 =
(1) 1
(2) 2
(3) - 1 (4) 3
49. If x = a cos 0, y = b sec 0 =
(1) xy = a b
(2) x2 y? = ab
(3) x² y = a b
(4) None

50. Length of shadow of a 12 m high pole is 43 metres in
the morning. What is the angle of elevation of the sun rays
with the ground at that time?
(1) 30 (2) 45°(3)
15º (4)60
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Answer 1

Answer:

48 = (3) -1 , 49 = (2) x2 y ? = ab