вычислить 1. (sin 17'*cos 17')/(1 - 2sin^2 28') 2. (2 cos^2 24' - 1)/(sin 21'*cos 21')

Question

вычислить 1. (sin 17'*cos 17')/(1 - 2sin^2 28')

2. (2 cos^2 24' - 1)/(sin 21'*cos 21')

Answer 1

вычислить 1. (sin 17'*cos 17')/(1 - 2sin^2 28')

2. (2 cos^2 24' - 1)/(sin 21'*cos 21')

---