Question

Cellus
Solve for 43.
43 = ?
43 44=90°
Enter

Answer 1

`\displaystyle \angle3 = {90}^( \circ)`

Explanation:

we are given two angles

we are want to figure out the missing angle

remember,

Straight line theorem

so we acquire

`\displaystyle \angle3 + \angle4 = {180}^( \circ)`

substitute the value of the given angle:

`\displaystyle \angle3 + {90}^( \circ) = {180}^( \circ)`

cancel 90° from both sides:

`\displaystyle \angle3 = {90}^( \circ)`

hence, the measure of the missing angle is 90°

Answer 2

Solution given:

<4=90°

<3+<4=180°[sum of pair of line is supplementary]

<3=180°-90°

<3=90°is a required answer.