All of them are similar so I’ll answer one of them.
Q no. 12
In the given right angled triangle,
With respect to given angle (theta) 60,
Perpendicular (P) = 3
Base (B) = n
Hypotenuse (H) = m
We know,
Tan theta = P/B
Tan 60 = 3/n
Root under 3 = 3/n
.•. n=3 root under 3
Also,
Sin theta = P/H
Sin 60 = 3/m
Root under 3/2=3/m
.•.m=6/root under 3
