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CGP EDU Academic Team
Published on: August 13, 2026
In a triangle ∠ A = 55 0 , ∠ B = 15 0 , ∠ C = 110 0 . Then c 2 – a 2 is equal to -
Text Solution
Verified by ExpertsThe correct answer is:
A
= 
= 
= k
Now c 2 – a 2 = k 2 sin 2 110 0 – k 2 sin 2 55 0 = k
2 (sin 110 0 + sin 55 0 ) (sin 110 0 – sin 55 0 )
= k 2 
= k 2 sin 165 0 sin 55 0
= (k sin 55) (k sin 15)
= ab.
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