Question

In ∆ABC right angled at B, if tan A = √3 then the value of cos A cos C-sin A sin C is : ​

Answer 1

Answer:

your answer for the question you ask

Answer 2

Answer:

0

Step-by-step explanation:

Given, B=90° and tanA=√3 , then A=60°

so, C = 180°-A-B = 180°-60°-90° = 30°

NOW,

cosA.cosC - sinA.sinC = cos(A+C)

= cos(60°+30°) = cos90° = 0.