Answered

LEVEUVE
15. Which of the following formulas can be used to solve for measure of LA in AABC?
D2+c2+a?
b2+c2-a?
b2-c2-a2
1. Cos A =
II. COS A =
III. COS A =
2bc
2bc
2bc

Sagot :

Kyzelvercideviz

Answer:

a²=b²+c²-2bcCosA

hope this helps. Quesrion is not clear. Brainliest if correctplease