In the rhombus abcd, angle dae = 30. if eb is 6 cm what is the length of da

Required Basic Knowledge.

Rhombus is a parallelogram with equal sides.

i.e.

diagonals bisect eachother. (DE=EB),(AE=EC) &(AED = DEC = CEB = BEA =90°)

And

AD=DC=CB=BA

SOLUTION

——————

Cosider ∆ADE;

AED =90° (refer above details)

given. DAE=30°

DE=6cm (DE=EB; also refer above)

To find:length of AD

Taking Cosine of Angle A

Cos(A) =DE/AD

->Cos(30°) =6cm/(AD)

->(√3/2) = 6cm/(AD)

-> AD =6÷(√3/2) cm

->AD =6×(2/√3) cm

->AD =12/√3 cm (;√3=1.73 .approximately)

->DA=12/1.73 cm

-> DA = 6.936 cm (approx.)

Hope it helps...

Regards,

Leukonov/Olegion.

54

step-by-step explanation:

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )