Question

If a figure, line l || line m & line n is the transversal. 1) If m angle a = 40 digree then m angle b=?. answer:- 2) what is the type of the pair of m angle b and m angle c ? answer:- please answer fast and correct.​

Answer 1

Answer:

Prove that

Cos A + Cos?B-2 Cos A Cos B Cos(A+B) = Sin²(A+B)

Answer 2

Answer:

Prove that

Cos A + Cos?B-2 Cos A Cos B Cos(A+B) = Sin²(A+B)

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