Question

3. If tan 20° = lamda then prove that tan 160° -tan 110° by 1+tan 160°. tan 110° = 1-lamda^2 by 2 lamda​

Answer 1

Step-by-step explanation:

Given, (In air)

Velocity V=340m/s

Frequency f=20,000Hz

Wavelegth λ=?

V=f.λ

λ=

F

V

=

20,000

340

=0.017Hz

Also, Given (in Water)

Velocity, V=1480m/s

Frequencyf=20,000Hz

wavelength, λ=?

V=F.λ

λ=

F

V

=

20,000

1480

=0.074Hz