CBSE Class 10 Answered
In triangle ABC show that
(sin)^2 A/2 = (sin)^ 2 B+C/2 = 1
Asked by Navya Benny | 20 Sep, 2013, 09:35: PM
In a triangle sum of all angles is 180 degrees.
A + B + C = 180o
B + C = 180 - A
B + C/2 = 90 - A/2
sin2 (B + C/2) = sin2 (90 - A/2)
sin2 (B + C/2) = cos2 A/2
Hence,
LHS = sin2 A/2 + sin2 (B + C/2) = sin2 A/2 + cos2 A/2 = 1
Answered by | 22 Sep, 2013, 02:31: PM
Application Videos
Concept Videos
CBSE 10 - Maths
Asked by mohantybasanti04 | 22 Jan, 2023, 07:08: PM
CBSE 10 - Maths
Asked by harshitgamer6386 | 14 Jan, 2023, 08:22: AM
CBSE 10 - Maths
Asked by riddhu542007 | 07 Jan, 2023, 09:31: PM
CBSE 10 - Maths
Asked by skailas803 | 05 Jan, 2023, 11:37: PM
CBSE 10 - Maths
Asked by rumanshukumar0 | 04 Jan, 2023, 10:44: PM
CBSE 10 - Maths
Asked by barbysingh2006 | 30 Dec, 2022, 08:41: PM
CBSE 10 - Maths
Asked by rc1827805 | 23 Dec, 2022, 08:11: PM
CBSE 10 - Maths
Asked by deepakverma786024 | 18 Dec, 2022, 05:43: AM
CBSE 10 - Maths
Asked by devanshsinghbais111 | 11 Oct, 2022, 01:57: PM
CBSE 10 - Maths
Asked by Bavashreelogasundaram | 22 Sep, 2022, 08:26: PM