Law of cosine:
c² = a² +b² -2ab*cosC.
Because the triangle is equilateral a=b=c=x,
and we can write,
x²=x² +x² -2xx*cosC
x² =2x² -2x²* cos C
-x² = -2x²*cos C
cos C= 1/2,
so m∠C=60⁰.
Because all sides are equal, and across of the equal sides should be equal angles, all angles will be also equal and = 60⁰.
I think it's D. 58 because The triangle has a right angle (90 degrees), so all you have to do is subtract 32 from 90.
Answer: D. 58 degrees
Answer:
a. -4x(factor) 5 (term), b. both are factors, c. both are factors, d. all are factors, e. pq(factor) q(term) f. all are factors.
Step-by-step explanation:
Easy is an adverb.It is an adverb because an adverb is something that helps a verb or adjective.
Answer:
3:7
Step-by-step explanation:
Simplify:
12:28
6:14
3:7