Fractions over 1 + sin and 1 - sin (or cos): add, then simplify or solve

1. A.
   $90^\circ$
2. B.
   $45^\circ$
3. C.
   $60^\circ$
4. D.
   $30^\circ$

Tap an option to check your answer.

1. A.
   $2\sin^2\theta$
2. B.
   $2\sec^2\theta$
3. C.
   $2\text{cosec}^2\theta$
4. D.
   $2\tan^2\theta$

Tap an option to check your answer.

1. A.
   $\sqrt{6}$
2. B.
   $\sqrt{5}$
3. C.
   $\sqrt{2}$
4. D.
   $\sqrt{3}$

Tap an option to check your answer.