Question

3. Which of the following is the correct identity?
a) cot(pie/2+A)= tan A
b) sec(7pie/2-A)
- cosec A
c) sin(n×pie + A)=(-1)^2n sin A
d) sin (pie - A) = -sin A​

Answer 1

Answer:

(c) sin(n×pie+A) =)-1)^2n sin A is correct answer