Trigonometry> prove that cos130°cos140°-sin130°sin140° ...

prove that cos130°cos140°-sin130°sin140° and give the solution

sridevi , 3 Years ago

Grade 8

2 Answers

Vikas Amritiya

Last Activity: 3 Years ago

Dear student please find attachment below

Here is detailed solution of your doubts

keep asking ypur doubts

Askiitians faculty

Dear student please find attachment below

Here is detailed solution of your doubts

keep asking ypur doubts

Askiitians faculty

James M. Mason

Last Activity: 2 Years ago

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