If a+b+c=180degrees then cos square a + cos square b- cos square c
Surya , 6 Years ago
Grade 8
Trigonometry> If a+b+c=180degrees then cos square a + c...
1 Answers
Deepak Kumar Shringi
Last Activity: 6 Years ago
you can just put values to find answer put all equal to 60
it will come as
1/4
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