Math, asked by rakshagangadhar17, 5 months ago

Prove that cos 5100 cos 3300 + sin 3900 cos 1200 = -1

Answers

Answered by isaiahsifuma33

1

Step-by-step explanation:

From our calculator

We know cos5100=0

Cos3900=0

Sin3900=-1

Cos1200=0

Soit will be

Cos5100cos3300=0

Sin3900cos1200=-1

0+-1=-1

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