Question

if tan(90degree-A/2)=root3 find the value of cos theta​

Answer 1

Answer:

1/2

Step-by-step explanation:

Given,

tan (90° - A/2) = √3 ..........................1

We know that, tan 60° = √3. .........................2

By 1 and 2

tan (90° - A/2) = tan 60° ( tan tan cancels......)

= 90 - A/2 = 60

= A/2 = 30

= A = 60°

The value of cosA = cos 60°

= 1/2