Question

Write the complement of the following angles : 30${}^{\circ }$ 20´

Answer 1

Complement of

30${}^{\circ }$ 20´ = 90${}^{\circ }$ – 30${}^{\circ }$ 20´

= 90${}^{\circ }$ – (30${}^{\circ }$ + 20´)

= (89${}^{\circ }$ – 30${}^{\circ }$) + (1${}^{\circ }$ – 20´)

= 59${}^{\circ }$ + (60´ – 20´) [1${}^{\circ }$ = 60´]

= 59${}^{\circ }$ + 40´

= 59${}^{\circ }$ 40'