Grade 11Trigonometry
. If the point (3, -2) is transformed to (-2, 1) when the origin is shifted to (x,y) then x-y is equal to
9
. If the point (3, -2) is transformed to (-2, 1) when the origin is shifted to (x,y) then x-y is equal to
9
9
1 Answer
Priyansu Samal
If A+B+C=180°
Then, prove tanA+tanB+tanC=tanA.tanB.tanC
Ana- L.H.S.
A+B+C=180° ;A+B =180°-C
tan(A+B)=tan(180°-C)
tanA+tanB/1-tanA.tanB=-tanC
tanA.tanB.tanC (RHS)
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