If tan 7theta=cot(5theta–30degree),both angles are acute angles,find the value of theta

Asked by shethdhrumil0 | 20th Dec, 2019, 12:09: AM

Expert Answer:

tan 7 theta = cot (5theta – 30 degree)
 
cot (90 - 7θ) = cot (5θ - 30)
90 - 7θ = 5θ - 30                   cot (90 - θ) = tan θ
120 = 12θ  
θ = 10

Answered by Sneha shidid | 20th Dec, 2019, 12:39: PM