If `theta` is the angle between two lines whose d.r's are (1,-2,1) and (4,3,2) then `sec((theta)/(2))+cos ec((theta)/(2))`=

If theta is the angle between two lines whose d.r's are (1,-2,1) and (4,3,2) then sec((theta)/(2))+cosec((theta)/(2)) =

Prove: (sec^(2)theta-1)(cos ec^(2)theta-1)=1

What is the value of (tan^(2)theta-sec^(2)theta)/(cot^(2)theta-cos ec^(2)theta)?

(sin theta+cos ec theta)^(2)+(cos theta+sec theta)^(2) is

If 2 theta is an acute angle, then the acute angle between the two lines x^(2)(cos theta-sin theta)+2xy.cos theta +y^(2)(cos theta +sin theta)=0 is

(cos ec^(2)theta-sec^(2)theta)/(cos ec^(2)theta+sec^(2)theta)=(3)/(4)

If theta is an acute angle and tan theta=(1)/(sqrt(7)), then the value of (cos ec^(2)theta-sec^(2)theta)/(cos ec^(2)theta+sec^(2)theta) is 3/4b.1/2 c.2d.5/4

Prove that cos ec((pi)/(4)+(theta)/(2))cos ec((pi)/(4)-(theta)/(2))=2sec theta

If roots of equation 3x^(2)+5x+1=0are(sec theta_(1)-tan theta_(1))and(cos ec theta_(2)-cot theta_(2)) Then find the equation whose roots are (sec theta_(1)+tan theta_(1))and(cos e theta_(2)+cot theta_(2))

The angles between 0^(0) and 90^(@) which Satisfy the equation sec^(2)theta cos ec^(2)theta+2cos ec^(2)theta=8 is