Ascalene triangle has the lengths 6, 11, and 12. keyla uses the law of cosines to find the measure of the largest angle. complete her work and find the measure of angle y to the nearest degree.1.  122 = 112 + 62 − 2(11)(6)cos(y)2. 144 = 121 + 36 − (132)cos(y)3. 144 = 157 − (132)cos(y)4. −13 = −(132)cos(y) degrees

The measure of angle Y is 84°.

Step-by-step explanation:

The side of a triangle are 6, 11, and 12.

Keyla uses the law of cosines to find the measure of the largest angle.

Law of cosine:

where, a,b, c are sides and A is angle.

Let a=12, b=11, c=6 and angle A=\angle Y

Using law of cosine, we get

Subtract 157 from both sides.

Divide both sides -132.

Taking cos⁻¹ both sides.

Therefore the measure of angle Y is 84°.

12m

step-by-step explanation:

square root means have of a number so have of 3 is 1.5 then multiply it by 8 and you get your answer!

jml angle lkj & angle mj = lm