AS Trime bound and continuity are two measurable quantities respectively equal to
cos(A+
where 0° <A+B390° find the values
A& Birsin(AB)
of A and B.
49. Ifx - Sin' 0, y = Cos' where x & y represents honesty and hardwork
(a) What will be the result after joining honesty & hardwork
(b) Which mathematical concept has been used here?
(c) Which values are depicted here?
50. Prove that:
1 1 1
Cosec 0 + Coto Sin Sin Cosec 0 - Coto
Cos a
51. Il Cosß
Cosa = m and Sin
= n, then prove that (m + n ) Cosa B = n?
52. If tan 0 + Sin 0 = m. tan 0-sin 0 = n, then prove that mº- n2 = 41mn
53. Prove that:
Sin0 - 2Sin* 0 - 1
Sec0 -
2Cos - Cos'
54. Cote tan (90°-0) - Sec (90° - 0) Cosec 0 + 13 tan 12° tan 60° tan 78° find
its value.
55. Find the value of -
Sec (90°-) Cosec - tan (90°- 0) Cot 6 + Cos? 25° + Cos? 65°
3 tan 27° ian 63°
Answers
cos(A+
where 0° <A+B390° find the values
A& Birsin(AB)
of A and B.
49. Ifx - Sin' 0, y = Cos' where x & y represents honesty and hardwork
(a) What will be the result after joining honesty & hardwork
(b) Which mathematical concept has been used here?
(c) Which values are depicted here?
50. Prove that:
1 1 1
Cosec 0 + Coto Sin Sin Cosec 0 - Coto
Cos a
51. Il Cosß
Cosa = m and Sin
= n, then prove that (m + n ) Cosa B = n?
52. If tan 0 + Sin 0 = m. tan 0-sin 0 = n, then prove that mº- n2 = 41mn
53. Prove that:
Sin0 - 2Sin* 0 - 1
Sec0 -
2Cos - Cos'
54. Cote tan (90°-0) - Sec (90° - 0) Cosec 0 + 13 tan 12° tan 60° tan 78° find
its value.
55. Find the value of -
Sec (90°-) Cosec - tan (90°- 0) Cot 6 + Cos? 25° + Cos? 65°
3 tan 27° ian 63°
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