Question: Indicate whether is true or false

(a) \(\sin \theta =\cos \left( 90-\theta \right)\)

(b) \(\tan \theta =-\cot \left( 90-\theta \right)\)

(c) \(\sin \theta =\frac{1}{\csc \theta }\)

(d) \(\cos \theta =\frac{1}{\sec \theta }\)

(e) \(\sin {{25}^{\text{o}}}=\sin {{155}^{\text{o}}}\)

(f) \(\tan {{20}^{\text{o}}}=\cot {{70}^{\text{o}}}\)

(g) \(\sin \theta \) is never greater than 1 or less than -1