" If "theta" is a positive acute angle such that sec "theta=cosec60^(@)," find the value of "2" cos "

If theta is a positive acute angle such that sec theta=cos ec60o, find the value of 2cos^(2)theta-1

If theta is a positive acute angle such that sectheta=cos e c\ 60o , find the value of 2cos^2theta-1 .

If the angle theta=-60^(@) , find the value of cos theta .

If theta is a positive acute angle and "cosec"theta+cottheta=sqrt(3) , then the value of cosec theta is

If theta is a positive acute angle and "cosec"theta=sqrt(3) , then the value of cottheta-"cosec"theta is

If theta is a positive acute angle and tan 2theta tan 3 theta =1 , then the value of (2 cos^2""(5theta)/2-1) is

If theta is a positive acute angle and sec theta =(m^2+1)/(2m) find tan theta and cosec theta

If theta positive acute angle and sectheta=(17)/8 , find cosec theta .

If theta be positive acute angle sin3 theta=cos(2theta+15) ,find the value of theta .

If theta is a positive acute angle and tan theta + cot theta = 2 , then the value of sec theta is