Math, asked by nishantsoni1925, 6 months ago

formula of cosC-cos D

Answers

Answered by itzrakesh55

3

Answer:

(i) CosC - CosD = 2Sin[(C+D)/2]*Sin[( D-C)/2].

(ii) cosC-cosD=2si.

Answered by Anonymous

3

Answer:

CosC - CosD = 2Sin[(C+D)/2]*Sin[( D-C)/2].

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