Math, asked by casvaish, 11 months ago

cos 10 ° + cos 20 °+ ...cos 80 ° please find it and I'll mark the correct one as brainliest...​

Answers

Answered by anmolverma010
2

Answer:

40

Step-by-step explanation:

Cos 10° + cos 20°........ Cos 80°

Since Cos 80° can be written as Sin 10°

Similarly all the other Cos theta degrees will get converted to Sin theta degrees after Cos 40°

Therefore

Cos 10° + Sin 10° = 1

So 40 will be the answer.

Answered by shivam30011970genius
3

Answer:

is their nothing between cos20 and cos80

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