\( ( 1 - \sin \alpha ) ( 1 + \sin \alpha ) - \cos ( \pi - \alpha ) ( \cos \alpha - \sin \alpha ) ^ { 2 } + 2 \cos ^ { 2 } \frac { \alpha } { 2 } \cos ( \pi + \alpha ) \)

\( \left(\sec 79.36^{\circ}\right)\left(\sin 79.36^{\circ}\right)-\left(\tan 79.36^{\circ}\right)=\underline{\text { Blank } 1} \)

[6] If \( \cot (90-\theta)=\cot (2 \theta), 0<\theta<90 \), then \( \sin 3 \theta=\ldots \ldots \) (a) 3 (b) 4 (c) 2 (d) 1

\( r = \tan \theta \sec \theta \)

tan \( 0.8035=\underline{\text { Blank } 1} \) (Express your answer in 3 decimal points) Blank 1 Add your Thnswer

[3] If \( \sin \theta=\frac{3}{5} \) where \( 90<\theta<180 \), then \( \sin (180-\theta)+\cos (\theta-90)=\ldots \ldots \ldots \) (a) \( \frac{4}{5} \) (b) 1 (c) \( \frac{6}{5} \) (d) \( \frac{-6}{5} \)