CBSE Class 10 Answered
Please solve the question given in the description
Asked by mac12303190 | 14 Feb, 2010, 10:54: PM
Expert Answer
(1+ cosA) (1+cosB) (1+cosC) = (1-cos A)(1-cosB)(1-cosC)
Multiplying out sides by RHS, using (a+b)(a-b) = a2-b2
(1+ cosA)2 (1+cosB)2 (1+cosC)2 = (1-cos2 A)(1-cos2B)(1-cos2C)
(1+ cosA)2 (1+cosB)2 (1+cosC)2 = (sin2 A)(sin2B)(sin2C)
Taking square roots,
(1+ cosA) (1+cosB) (1+cosC) = (sinA)(sinB)(sinC) = (1-cos A)(1-cosB)(1-cosC)
Regards,
Team,
TopperLearning.
Answered by | 15 Feb, 2010, 05:35: AM
Application Videos
Concept Videos
CBSE 10 - Maths
Asked by swetalinasamantaray022 | 21 Mar, 2023, 04:15: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by shanbhog.06 | 14 Apr, 2022, 11:26: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by badakhsharda | 14 Apr, 2022, 08:57: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by naancysingh | 09 Apr, 2022, 07:07: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by vy499292 | 23 Jan, 2022, 08:04: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by godboletanaya | 24 Dec, 2021, 11:08: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by nikunjgupta102021 | 12 Jul, 2021, 09:01: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by urzashu7818 | 15 Jan, 2021, 12:52: PM
ANSWERED BY EXPERT