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सरणिक |{:(cos70^@,sin20^@),(sin70^@,cos2...

सरणिक `|{:(cos70^@,sin20^@),(sin70^@,cos20^@):}|` का मान ज्ञात कीजिय |

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cos70^(@)+sin40^(@)=

cos70^(@)+sin40^(@)=

sin 70^@ - cos 40^(@) =

sec 70^@.sin 20^@ - cos70^@.cosec 20^@

(sin70^@+cos40^@)/(cos70^@+sin40^@)=

(2cos40^(@)-cos20^(@))/(sin20^(@))=?

|["cos"70^(@), "sin"20^(@)], ["sin"70^(@), "cos"20^(@)]|=?

sec70^(@)sin20^(@)+cos20^(@)cosec70^(@)=2

(2cos40^(@)-cos20^(@))/(sin20^(@))

(2cos40^(@)-cos20^(@))/(sin20^(@))