Which of the following is the value of `cos((5pi)/2 - (19 pi)/(3))`?

Find the value of cos((19pi)/3)

Which of the following is/are the value of "cos"[1/2cos^(-1)(cos(-(14pi)/5)]? cos(-(7pi)/5) (b) sin(pi/(10)) cos((2pi)/5) (d) -cos((3pi)/5)

Which of the following is/are the value of "cos"[1/2cos^(-1)(cos(-(14pi)/5)]? cos(-(7pi)/5) (b) sin(pi/(10)) cos((2pi)/5) (d) -cos((3pi)/5)

Which of the following is/are the value of "cos"[1/2cos^(-1)(cos(-(14pi)/5)]? cos(-(7pi)/5) (b) sin(pi/(10)) cos((2pi)/5) (d) -cos((3pi)/5)

Which of the following is/are the value of "cos"[1/2cos^(-1)(cos(-(14pi)/5)]? (a) cos(-(7pi)/5) (b) sin(pi/(10)) (c) cos((2pi)/5) (d) -cos((3pi)/5)

Find the value of cos((2pi)/5).cos(pi/5)

The value of cos^(-1)(cos(5pi)/3)+sin^(-1)(sin(5pi)/3)"is"

Simplify cos^(-1) cos ((19pi)/3)

Find the value of the following : cos^(-1)("cos"(5pi)/3)

Find the values of the following :- (a)sin(2pi+(pi)/(6)),(b)cos(2pi+(pi)/(3))