Question

in angle ABC, angle a=30°,angle B=45°,find angle c

Answer 1

here
angle A +angle B +angle C=180
30+45+C=180
C=180-75
C=105

hope the ans will help u....
mark my ans as brainliest

Answer 2

Answer:

Required value of angle c is 105°

Step-by-step explanation:

Here given triangle is ABC.

angle a$= {30}^{o}$

and angle $= {45}^{o}$

Here we want to find third side of the triangle.

We know,Sum of all angles of a triangle is 180°.

If x,y,z are three angles of triangle then

$x + y + z = {180}^{o}$

For example,

a triangle has three angles are 20°,30°,p

then

${20}^{o} + {30}^{o} + p = {180}^{o} \\ p = {180}^{o} - {20}^{o} - {30}^{o} \\ p = {130}^{o}$

Here given two angles of triangle is 30° and 45°

Let value of angle c be a.

According to rule,

${30}^{o} + {45}^{o} + a = {180}^{o} \\ {75}^{o} + a = {180}^{o} \\ a = {180}^{o} - {75}^{o} \\ a = {105}^{o}$

Required value of angle c is 105°.