Question

2. ପ୍ରମାଣ କର :
sin(A-B)
COSA.cosB
i)
tanA - tanB,​

Answer 1

Answer:

sin(A-B))/cosAcosB = (sinAcosB - cosAsinB)) / cosAcosB =

sinAcosB/cosAcosb - cosAsinB/cosAcosB = sinA/cosA - sinBcosB = tanA - TanB