सरल कीजिए- `cos theta[(cos theta, sin theta),(-sin theta, cos theta)]+sin theta [(sin theta, -cos theta),(cos theta, sin theta)]`

सरल कीजिए-
`cos theta[(cos theta, sin theta),(-sin theta, cos theta)]+sin theta [(sin theta, -cos theta),(cos theta, sin theta)]`

Monjur Alahi

6 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

यहां
`cos theta[(cos theta, sin theta),(-sin theta, cos theta)]+sin theta [(sin theta, -cos theta),(cos theta, sin theta)]`
`=[(cos^(2)theta, cos theta sin theta),(-cos theta sin theta,cos^(2)theta)]`
`+[(sin^(2) theta, -sin theta cos theta),(sin theta cos theta, sin^(2) theta)]`
`=[(cos^(2) theta+sin^(2) theta, sin theta cos theta -sin theta cos theta),(-sin theta cos theta+sin theta cos theta,cos^(2) theta+sin^(2) theta)]`
`=[(1,0),(0,1)]`

6 views Answered 2023-02-05 15:29

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