Question

18 If sin 3x = 1 and 0º < 3x < 90°, find the values of (i) sin x (ii) cos 2x (iii) tan2 x - sec2 x​

Answer 1

Answer:

Step-by-step explanation:

sin 90=1

so 3x=90

x=90/3=30

sin30=1/2

cos2*30=cos60=1/2