Question

if the angles of triangles ABC are in A.P ., a=2 ,c=4 then b

Answer 1

Step-by-step explanation:

It is just very simple one. Since the angles A,B & C of the triangle ABC are given to be in an A.P. therefore , we must have ;

A + B +C = 180° and A + C = 2B . Solving these two equations, we get angle B = 60° . Now by use of Cosine formula, we can obtain,

b^2 = a^2 + c^2 - 2acCos(60°) =4 +16- 2×2×4×(1/2)

Answer 2

$<b>Hello Friend<b>$ ❤️❤️

The answer of u r question is..✌️✌️

✖️If the angles of triangle ABC are in Ap a = 2 c=4 then b✖️


Ans:✍️✍️✍️✍️✍️✍️✍️✍️


We know that


A+B+C = 180

A+C=2B


Angle B = 60





${b}^{2} = {a}^{2} + {c}^{2}$

$4 + 16 - 2 \times 2 \times 4 \times \frac{1}{2}$



Hope it helps uu buddy❤️❤️

Thank you..☺️☺️