" 7.If "tan theta+sec theta=e^(x)" ,then "cos theta" equals "

If tan theta+ sec theta=e^x, then cos theta equals......... (a) (e^x+e^(-x))/2 (b) 2/(e^x+e^(-x)) (c) (e^x-e^(-x))/2 (d) (e^x-e^(-x))/(e^x+e^(-x))

If tan theta + sec theta =e^(x), then the value of cos theta is -

If tan theta + sec theta = m , then what is sec theta equal to ?

If sec theta +tan theta =P , then cos theta is equal to

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

If sec theta + tan theta =x then sin theta is equal to

If sec theta+tan theta=x then sec theta=

If sec theta + tan theta = x , then sec theta =