Understanding Engineering Mathematics

(iv)

C

A

B

a 4 a

O

(i)

C

C

A

A

D

B D

a B

a

d

O

(iii)

O

A

DB

(ii)

O

C

a

d

c

35 °

40 °

70 °

100 °

D.Determine the labelled angles:

a

c

b

60 ° O

(iv) (v)

(i)

(iii)

(ii)

3 aa

O O

a b 50 °

a

c

b

65 °

4 a a

b

O