CBSE Class 10 Answered
evaluate cos150
Asked by rutujaindulkar6 | 04 May, 2021, 10:19: AM
![begin mathsize 16px style space We space know space that comma space space cos space left parenthesis 180 degree space – space straight theta right parenthesis equals space – space cos straight theta
rightwards double arrow cos 150 degree space
equals space cos space left parenthesis 180 degree minus 30 degree right parenthesis space space
equals space – space cos space 30 degree
equals negative fraction numerator square root of 3 over denominator 2 end fraction space space......... open parentheses cos space 30 degree equals fraction numerator square root of 3 over denominator 2 end fraction close parentheses
end style](https://images.topperlearning.com/topper/tinymce/cache/893bbd39a5ba5cf4e30f387b564e66ed.png)
Answered by Yasmeen Khan | 04 May, 2021, 17:48: PM
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