Question

If $\frac{cos x}{a}$ = $\frac{cos (x+θ}{b}$ = $\frac{cos (x+2θ)}{c}$ = ​$\frac{cos (x+3θ)}{d}$ , then show that (a+c)c= (b+d)b

Answer 1

Answer:

tan

Step-by-step explanation:

apply the cosec formula