Question

solve for cos theta :- 4cos theta + 3sec theta = 4root3
plz answer quickly
best answer to be marked brainliest ​

Answer 1

Answer:

we replace sec by cos

we get quadratic equation is:4 cos^2-4√3cos+3=0

roots of above equation is√3/2.

cos(theta)=√3/2

theta=30°