Saturday

October 25, 2014

October 25, 2014

Posted by **yuri** on Saturday, August 24, 2013 at 2:09am.

- GEOMETRY (Angles) PLEASE -
**MathMate**, Saturday, August 24, 2013 at 6:57amYou'd have to set up equations.

First, let a=angle A, b=angle B and c=angle C, all in degrees.

(Note: in solving math problems, it is important to define all symbols/variables used, including the units).

We are given:

"angle b is 5 more than twice angle A" which translates to:

b=2a+5 .....(1)

"angle C is 35 less than three times angle A" which means:

c=3a-35 .....(2)

Finally, we know from basic geometry that the sum of angles of a triangle is 180°, so

a+b+c=180 .....(3)

Using the three equations, we can solve for a by substitution, i.e.

Substitute values of b and c from (1) and (2) into equation (3) and solve for the value of a.

**Answer this Question**

**Related Questions**

geometry - In a triangle ABC, angle B is 3 times angle A and angle C is 8 ...

Algebra - In a triangle ABC, angle B is three times angle A and angle C is 5 ...

MATHH - In a triangle ABC, angle A is 2 times angles C and angle B is 20 degrees...

Algebra, HELP! PLEASE! - In triangle ABC, angle B is four times as large as ...

Geometry. Please help. - 1) Two angles are complementary. The measure of one ...

algebra - In any triange, the sum of the measures of the angles is 180degrees. ...

algebra - In a triangle ABC , angle B is 4 times angle A and angle C is 17 ...

math - In a triangle ABC,angle B is 3 times angle A and angle C is 5 degrees ...

Geomatry - In triangle ABC, angle Bis five less than twice angle A and angle Cis...

algebra 1 - In a triangle ABC,angle b is 4 times angle "A" and angle "C" IS 17 ...