Cosine law
a^2 = b^2 + c^2 - 2(b)(c)cosA
a^2 = 2^2 + 4^2 - 2(2)(4)cos78
a = 4.08
a = 4.1
Answer:
The area of triangle is 1263.6 mm².
This is an Equilateral triangle.
Step-by-step explanation:
Given that the area of triangle formula is A = 1/2×base×height. So you have to substitute the values into the formula :

Let base = 54mm,
Let height = 46.8mm,



This is the <u>E</u><u>q</u><u>u</u><u>i</u><u>l</u><u>a</u><u>t</u><u>e</u><u>r</u><u>a</u><u>l</u><u> </u><u>t</u><u>r</u><u>i</u><u>a</u><u>n</u><u>g</u><u>l</u><u>e</u> because all sides of the triangle are <u>e</u><u>q</u><u>u</u><u>a</u><u>l</u>.
Answer:
5.5
Step-by-step explanation:
All three sides always add up to 360 so add the given measures and subtract it from 360 and that would give you your answer.
Answer:
y has the greatest value.
Step-by-step explanation:
1.23w = t
Divide both sides by 1.23.

--- (1)
1.01x = t
Divide both sides by 1.01.

--- (2)
0.99y = t
Divide both sides by 0.99.

--- (3)
From (1), (2) and (3), it is clear that y has the greatest value.