CBSE Class 11-science Answered
if A+B=C and tanA=k tanB then prove that sin(A-B)=(k-1)/(k+1)sinC
Asked by Aarthi Vishwanathan | 01 Jun, 2012, 08:55: PM
Expert Answer
tan A=k tanB ; or tan A\tan B=k
apply componendo & dividendo
(tan A -tanB)\(tanA+tanB)=(k+1)\(k-1)
applying the identities
tan A
tan B =sin (AB)\(cos A cosB)
sin(A-B)=(k-1).sinC\(k+1)
Answered by | 01 Jun, 2012, 11:13: PM
Concept Videos
-
Trigonometric identities and problems
Fundamental trigonometric identities and problems based on them. Sign Conve... -
Degree measure and Radian measure ...
This video explains the concept of negative & positive angles, conversion o... -
Domain, period and range of trigonometric functions ...
Define the domain, period and range of the trigonometric functions and plot... -
Basic Trigonometric Formulae
Derive and apply the basic formulae of sine and cosine functions like sin(... -
Sign of Trigonometric Functions
This video covers values of trigonometric ratios of angles greater than 90 ...
CBSE 11-science - Maths
Asked by rajyothi64 | 05 Mar, 2024, 09:49: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by ghoshshawata62 | 04 Mar, 2024, 08:16: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by nayaktapaswini2007 | 29 Feb, 2024, 09:10: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by bimanmandal53361 | 15 Jan, 2024, 12:32: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by sreyas.katuri | 23 Sep, 2023, 07:12: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by 069.pks | 16 Sep, 2023, 10:06: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by surekhashriwas01 | 12 Sep, 2023, 08:39: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by mvr23467 | 12 Sep, 2023, 07:52: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by SasipriyaNagappan | 27 Jul, 2023, 07:22: PM
ANSWERED BY EXPERT
