## anonymous 4 years ago 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

1. anonymous

that a right triangle?

2. anonymous

|dw:1347087195007:dw|

3. anonymous

OK THIS ONE IS MORE ACCURATE :)

4. anonymous

Is that a right triangle?

5. anonymous

6. anonymous

No

7. anonymous

8. anonymous

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|dw:1347088112276:dw| 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 $\frac{ 2A }{ bc }$

9. anonymous