Question

Which expression is equivalent to the sine of the angle γ for the triangle of area A shown below?







a. 2a/bc

b. a/c

c. b/c A




d. Not enough information



A. a
B. b
C. c
D. d

Answer 1

that a right triangle?

Answer 2

OK THIS ONE IS MORE ACCURATE :)

Answer 3

Is that a right triangle?

Answer 4

already asked that...

Answer 5

No

Answer 6

my bad

Answer 7

see to solve this question draw a perpendicular on the side b.
Now we know that the area of a right angled triangle is
\[\frac{ 1 }{ 2 } \times base \times height\]
Now we have two triangles with respective base
Now use the area formula.
so the area of the truangle A is the combined area of the two triangles.
\[A= \frac{ 1 }{ 2 } h \times (b1+b2)\]
Now sin(y) is h/c.
Replace h from sin(y) using area eqn and you will get the answer as
\[\frac{ 2A }{ bc }\]