3 Rajah 7 menunjukkan separuh bulatan OABCD berpusat di 0 dan segitiga bersudut tepat ADE.
Diagram 7 shows a semicircle OABCD with centre 0 and a right angled triangle
ADE
C.
B
10 cm
O
6 cm
Rajah 7 / Diagram 7
Diberi bahawa panjang AE = 10cm dan jejari separuh bulatan OABCD ialah 6cm.
It is given that the length of AE = 10 cm and the radius of the semicircle OABCD is
6 ст.
/Guna / Use a = 3.142)
Hitung / Calculate
(a)
2 EDA dalam radian,
ZEDA in radian,
tan 9.
apo raid
ml​