K kpad5991 Member Joined Dec 29, 2016 Messages 238 Gender Male HSC 2018 Jan 16, 2017 #1 In a parallelogram ABCD, angle ADC equals 60 degrees, AB = 9cm and AD= 3 cm. the point P lies on DC such that DP = 3 cm. A) use the Cosine rule in triangle BCP to find BP. B) let angle APB = x. Show that cos x = - root 7/ 14
In a parallelogram ABCD, angle ADC equals 60 degrees, AB = 9cm and AD= 3 cm. the point P lies on DC such that DP = 3 cm. A) use the Cosine rule in triangle BCP to find BP. B) let angle APB = x. Show that cos x = - root 7/ 14
