If θ is an acute angle of a right triangle, then the value of

sin θ cos(90° - θ) + cos θ sin (90° - θ) is

1. 0

2. 2 sin θ cos θ

3. 1

4. 2 sin² θ

The value of cos 65° sin 25° + sin 65° cos 25° is

1. 0

2. 1

3. 2

4. 4

Statement (i) : sin² θ + cos² θ = 1

Statement (ii) : cosec² θ + cot² θ = 1

Which of the following is valid ?

1. only (i)

2. only (ii)

3. both (i) and (ii)

4. neither (i) nor (ii)