If `cos theta = 0.75, tan theta =`

If sec theta + tan theta = k, cos theta =

Prove that (sin theta + sin 3theta+ sin 5 theta + sin 7theta)/(cos theta + cos 3theta + cos 5 theta + cos 7theta) = (tan 3theta + tan theta)/(1 - tan 3theta tan theta) .

If theta_(1), theta_(2) are solutions of the equation a cos 2theta + bsin 2theta = c, tan theta_(1) != tan theta_(2) and a+c != 0 , then find the values of (i) tan theta_(1) + tan theta_(2) (ii) tan theta_(1).tan theta_(2) .

If cos^4 theta + cos^2 theta = 1 then the value of (tan^4 theta + tan^2 theta) is equal____

If tan theta = 1, then cos theta =………

(cos theta )/( sec theta + tan theta ) + ( cos theta )/( sec theta - tan theta ) =

If (cos^2 theta -1)(1+tan^2 theta )+2 tan^2 theta =1,0^@ यदि (cos^2 theta -1)(1+tan^2 theta )+2 tan^2 theta =1 ,है, जहाँ 0^@ < theta < 90^@ , तो theta का मान होगा :

Show that (1)/(cos theta) - cos theta = tan theta. sin theta

If 3 sin theta - 4 cos theta = 0 , then find the values of tan theta , sec theta and cosec theta .