Question

if cot θ*cotΦ=3, then find the value of cos(θ-Φ)/cos(θ+Φ)

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

cotθ*cotΦ = 3

then

cosθ cosΦ/ sinθ sinΦ=3

cosθ cosΦ =3 sinθ sinΦ ____(1)

cos (θ-Φ)/cos(θ+Φ)=

cosθcosΦ + sinθsinΦ / cosθcosΦ-

sinθsinΦ_____(2)

put the value in equ (2) from eqe (1)

4sinθsinΦ / 2sinθsinΦ =2