Question

A pendulum of length 21 cm oscillates through an angle of 36° find the length of its path ​

Answer 1

Answer:

length of path l=13.188cm.

Step-by-step explanation:

A pendulum length 21cm oscillates through an angel an of 36.we need to find the length of path.

Since we know the formula from the trigonometry l=rθ

where l=length of path, r=length of pendulum ,θ=angle

since it is given in question l=? r=21cm, θ=36°

since we need to convert the degree in to radians

So applying the 180 degree=\pi radians180degree=πradians

so,36 degree =0.628radian36degree=0.628radian

Apply l=rθ

we get l=21\times0.628l=21×0.628

so we get l=13.188cm

Answer 2

Answer:

Step-by-step explanation: