Question

BEST GETS BRAINLIST! 16 POINTS! Help please, attached below, please do a step by step of The SohCahToa method. I help to find the height, round to the nearest hundred decimal.

Answer 1

Answer:

Perimeter of ΔABC = 16.46 units

Step-by-step explanation:

By applying cosine rule (CAH) in the given triangle ADB,

cos(∠BAC) = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

cos(55°) = $\frac{3}{AB}$

AB = 5.23 units

Since, ΔABC is an isosceles triangle

AB = BC = 5.23 units

AD = DC = 3 units [Perpendicular drawn from a vertex of an isosceles triangle is a perpendicular bisector of the opposite side]

Therefore, AC = AD + DC = 6 units

Now perimeter of ΔABC = AB + BC + AC

                                          = 5.23 + 5.23 + 6

                                          = 16.46 units