दी गई आकृति में, AC = b, BC = a तथा AB = c हो, तो बताएं कि निम्न में से कौन सा कथन सत्य है?
(i) cosec A = a/b
(ii) cosec A = c/a
(iii) cosec A = c/b
(iv) cosec A = b/a .
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it's easy...
you just have to apply Pythagoras theoram. First try yourself then tell....
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3.) cosec A = c/b is right answer
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