Question

if cos theta =1 /2, theta lies in the 1st quadrant,find 3 sin theta -4 tan theta​

Answer 1

Answer:

-5√3/2

Step-by-step explanation:

cos A = 1/2

cos A = cos 60°=> A = 60°

3 sinA - 4 tanA

= 3 sin60° - 4 tan 60°

= 3* √3/2 - 4 * √3

= √3 (3/2 - 4) = - 5√3/ 2