Question 1 i

Submitted by Anonymous (not verified) on

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I know exactly why xcosO (O = theta) = 1-xcosa-xcosb but am struggling to show it in any other way that diagrams.. Do I need a word explanation?

I used diagrams too, I don't

Submitted by TomDavies98 (not verified) on

I used diagrams too, I don't think a word explanation is necessary

Diagrams

Submitted by cxm on

Yep, a clear diagram is what is wanted here!