Asked by Jamilla
Find the lengths of the diagonals of a parallelogram with adjacent sides of 12cm and 13 cm if the angle between the sides is 50 degrees.
The shorter diagonal is what in terms of cm?
The longer diagonal is what in terms of cm?
The shorter diagonal is what in terms of cm?
The longer diagonal is what in terms of cm?
Answers
Answered by
Reiny
Use cosine law
(shortone)^2 = 12^2 + 13^2 - 2(12)(13)cos50°
etc
for the longone, replace the end part with cos130°
(shortone)^2 = 12^2 + 13^2 - 2(12)(13)cos50°
etc
for the longone, replace the end part with cos130°