Math, asked by manjunatha123, 11 months ago

cos 80° + cos 70° + cos 50° + cos 40º – cos 20° – cos 10º =

Answers

Answered by vp1691489

0

Answer:

0

Step-by-step explanation:

0.1736+0.3420+0.6427+0.7660-0.9396-0.9848 = O

Answered by machakavya333

0

Answer:

cosA+cosB is equal to 2cosA+B upon 2. cosA-B upon 2

Step-by-step explanation:

use this u will get the answer

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