Question

if the measure of one of the two complementary angle is 40°,find the other angle.​

Answer 1

Answer:

let the unknown number be x

we know that complementary is of 90°

so,

x+40=90. ( transposition rule)

x=90-40

x= 50

therefore 2nd angle is 50°

Answer 2

Answer:

50°

Step-by-step explanation:

just to revise, the 2 angle's whose sum is equal to 90°

Now,

1st angle = 40°

lets take 2nd angle as x

therefore,

40 + x = 90

x = 90 - 40

x = 50°

Ans: if one angle is 40° the other angle is 50°