If `theta` lies in the first quardrant and `costheta=(8)/( 17 )`, then find the value of `cos(30^(@)+theta)+cos(45^(@)-theta)+cos(120^(@)-theta)`.

If theta lies in the first quadrant and costheta=(8)/(17) , then find the value of cos(30^(@)+theta)+cos(45^(@)-theta)+cos(120^(@)-theta) .

Find the value of sin(45^(@)+theta)-cos(45^(@)-theta)

The value of sin(45^(@)+theta) - cos(45^(@)-theta) is

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

Find the value of sin (45^@+theta)-cos (45^@-theta)

If theta lies in the first quadrant and cot theta = ( 63)/( 16 ) , then what is the value of ( sin theta + cos theta ) ?

If theta lies in the first quadrant and cos theta=(8)/(17), then prove that cos((pi)/(6)+theta)+cos((pi)/(4)-theta)+cos((2 pi)/(3)-theta)=((sqrt(3)-1)/(2)+(1)/(sqrt(2)))(23)/(17)