Math, asked by gudibandishashikala, 5 months ago

trigonometry
Simplify
i) cos 100°.cos 40° + sin 100°. sin 40°

Answers

Answered by MuskanBhadoriya

1

Answer:

cosa -cosb = cosa.cosb+sina.sinb

Step-by-step explanation:

cos100°-cos40°

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