Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-commerce Answered

Question no. 24
question image
Asked by Payal | 22 Feb, 2018, 10:05: AM
answered-by-expert Expert Answer
begin mathsize 16px style To space find space cos open parentheses straight alpha plus straight beta close parentheses equals cosαcosβ minus sinαsinβ......... left parenthesis straight i right parenthesis
acosθ plus bsinθ equals straight c
acosθ equals straight c minus bsinθ
squaring space on space both space sides space and space simplifying
open parentheses straight b squared plus straight a squared close parentheses sin squared straight theta minus 2 bcsinθ plus straight c squared minus straight a squared equals 0
sinαsinβ equals fraction numerator straight c squared minus straight a squared over denominator straight b squared plus straight a squared end fraction
similarly
bsinθ equals straight c minus acosθ
squaring space on space both space sides comma
open parentheses straight b squared plus straight a squared close parentheses cos squared straight theta minus 2 accosθ plus straight c squared minus straight b squared equals 0
cosαcosβ equals fraction numerator straight c squared minus straight b squared over denominator straight b squared plus straight a squared end fraction
Put space it space in space left parenthesis straight i right parenthesis
you space will space get space fraction numerator straight a squared minus straight b squared over denominator straight a squared plus straight b squared end fraction end style
Answered by Sneha shidid | 22 Feb, 2018, 12:23: PM

Application Videos

CBSE 11-commerce - Maths
Asked by ay608560 | 04 Mar, 2024, 05:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by shivamkumar828786 | 04 Mar, 2024, 07:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by kbhavani936 | 19 Feb, 2024, 02:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by shikhapuri26 | 07 Sep, 2023, 04:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by pgsrilakshmivenkateshwara | 16 Aug, 2023, 07:07: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by slim16248 | 20 Oct, 2021, 12:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by amarnath3473 | 13 Jun, 2021, 12:43: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by Guptavanshika061 | 23 Apr, 2021, 12:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by nikinikita0740 | 15 Feb, 2021, 09:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-commerce - Maths
Asked by malikasaikia0 | 10 Dec, 2020, 12:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×