Question

if sec theta +tan theta=1, then find the value of sin theta in terms of 1

Answer 1

Your answer is here my friend

Answer 2

The given equation can be written as:
(1/cos theta) + (sin theta / cos theta) = 1

(1 + sin theta) / cos theta = 1

1 + sin theta  = cos theta

cos theta can be written as ( sin^2 theta - 1)^0.5

which gives us the equation,

1 + sin theta = ( sin^2 theta - 1)^0.5

squaring both sides,

1 + sin^2 theta + 2sin theta = sin^2 theta - 1

2sin theta = -2

sin theta = -1