when , Theta = 120 then , what will be the area of triangle ?
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1/2×sides which form the angle ×sin theta
Now in case the sides which form the angle is equal can be represent as 1/2×a×a×sintheta (here a denotes side length)
1/2×a^2×sintheta
In case of angle forming sides are unequal can be represent as
1/2×ab×sin theta (here a and b are side length which forms the angle)
Now u will thinking that from where this formula come it is same as 1/2 × base ×height
Now u will thinking the formula i discussed above have no height how it can be possible
Now let me explain u , u saw in formula asintheta or b sintheta is ur height and other side is ur base now from where it came .IT came from trigonometry.
This is the answer XD
I hope it's helps you
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