Question

55. If x = a sec 0 + b tan 0 and y = a tan 0+ b sec 0, prove that x - y = a’ -b'.

56. If sec 0 + tan 0 = m and sec 0 - tan 0 = n, show that mn = 1.

57. If sin 0 + cos 0 = m and sec 0 + cosec 0 = n, prove that n(m’ - 1) = 2m.

58. If cot 0 + tan 0 = m and sec 0 - cos () = n, prove that (m’n)?– (mn”)?/3 = 1.
(x)2/3 (4213 a

59. If x = a cos?0, y = b sin30, prove that (1) + 1) = 1.
a)
IL
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Answer 1

Answer:

according to me it is right.