Find the value of theta in degrees 0 degree lessthanorequalt

Find the value of theta in degrees (0 degree lessthanorequalto theta lessthanorequalto 90 degree) and radians (0

Solution

sec theta =sqrt 2, tan theta=sqrt(sec^2 theta-1)

tan theta=sqrt((sqrt 2)²-1)

tan theta=1

theta=tan^-11=45degree=pi/4

13. sin 30=1/2

cos 30=sqrt 3/2

cot 30=cos 30/sin30=sqrt3/2/1/2=sqrt 3

14. csc theta=hypotenuse/opposite=c/b=5/4