Question

NEED HELP SO BADLY, FOR AN ASSIGNMENT! in triangle PQR, sinP=(square root 2)/2 and sinQ= (square root 3)/ 2. without calculating the size of any angles, show that the value of sinR= (square root 2)(1+(square root 3)) /4

Answer 1

is there any more information, mayebe a picture of a triangle?

Answer 2

no there isnt unfortunately, thank you for replying though.

Answer 3

its an assignment about compound and double angles if that is any help?

Answer 4

if sin P = sqrt2/2 it means that P=pi/4
if sin Q = sqrt3/2 ----''------ Q=pi/3 or 2Pi/3
since the sum of the angles of a triangle is pi, there are two possibilitis for R :
R=pi-(pi/4+pi/3)
and
R=pi-(pi/4+2Pi/3)

Answer 5

thank you!!!!!!!! i cant believe i didnt see that, really means a lot. have a good day :)

Answer 6

yw