Question
If in a Δ ABC, perimeter is 12 units, b = 3 units, c = 5 units then find sin(A2).
Answer: Option A
:
A
We know, sin(A2)=√(s−b)(s−c)b.c
Where"s" is the semiperimeter and b & c are the sides of a triangle.
We'll do the appropriate substitution -
sin(A2)=√(6−3)(6−5)3.5
sin(A2)=1√5
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:
A
We know, sin(A2)=√(s−b)(s−c)b.c
Where"s" is the semiperimeter and b & c are the sides of a triangle.
We'll do the appropriate substitution -
sin(A2)=√(6−3)(6−5)3.5
sin(A2)=1√5
Was this answer helpful ?
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