If `A+B=pi/3 and cos A+cos B=1,` then which of the following is/are true ?

If A+B = pi/3 and cosA+cosB=1, then which of the following is/are true

If A+B=pi/3 , and cosA+cosB=1 , then which of the following is true:

IF A=pi//6 and B=pi//3 then which of the following is/are correct? 1. sinA+sinB=cos A+cos B 2. tanA+ tan B=cot A+ cot B Select the correct answer using the code given below:

Let cosA+cosB=x,cos2A+cos2B=y,cos3A+cos3B=z ,then which of the following is true

If the value of "cos"pi/15"cos"(2pi)/15"cos"(3pi)/15"cos"(4pi)/15"cos"(5pi)/15"cos"(6pi)/15"cos"(7pi)/15 is (1)/(2^(k)) , then which of the following is true ?

If A+B+C=pi , then cos B+cos C=

Let P=log_(0.3)((a-a^(-1))/(2)) a where a=tan((3 pi)/(8)) and Q=log_(cos(2 pi)/(3))b=sec2010 pi ,then which of the following is true?