Question

Write the answer of e
(a) (-7) (-7)​

Answer 1

..

Let the measure of the complementary angle be a.

40 + a = 90

∴ a = 50°

Hence, the measure of the complement of an angle of measure 40° is 50°

(ii)

Let the measure of the complementary angle be a.

63 + a = 90

∴ a = 27°

Hence, the measure of the complement of an angle of measure 63° is 27°

(iii)

Let the measure of the complementary angle be a.

45 + a = 90

∴ a = 45°

Answer 2

Answer:

(-7)×(-7) will be +49

because (-)×(-)is always +

so correct answer will be +49