I myself think that the idea of cos 180 is equal to 1 is What is the value of cos 180 degree get the answers you need, now! Click here 👆 to get an answer to your question ️ cos 20 + cos 40 + cos 60 +.cos 180
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The historic definition of sine and cosine are by means of rectangle triangles.
Answer: This is a classic result in mathematics, and here's a proof: Consider the product: cos1° cos2° cos3°.cos180° We can rewrite this product as: cos1° cos (180° - 179°) cos (180° - 178°).cos (180° - 1°) Using the identity cos (x) = cos (180° - x), we get: cos1° cos179° cos178°.cos1° Now, we can pair up the terms as follows: (cos1° cos179°) (cos2° cos178°). (cos89° cos91°) Each pair of terms has a product of 1, since cos (x) cos (180° - x) = 1. Therefore.
As per the data given in the question, we know, from sin graph that, also, we know that, form cos graph, and, since 180°<225°360° so, the value of theta will be 225° #spj2 10 i humbly ask for help in the following problem But i am unsure what to do next.
