Help please! I’m struggling in proving it

Mathematics

1 answer:

hammer [34]4 years ago

5 0

Answer:

Take RHS

Step-by-step explanation:

After that pit the formula of Cos C + Cos D and cut the 2 as they will be canceled and you will get Cos (A+B) *Cos (A-B) so after that use their formula and it will come im form of (A+B) *(A-B) so put them as using the formula of Asquare - B square and hence proved . Ask me of u get problem. Any where ok

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