Need help with these math problems asap.

54798 assignment
Qno.1
a).
We find that angle 1 marked are equal since subtended by the same arc.
So we get in the quadrilteral formed sum of angles = 46+12+180-(1)+180-(1) = 360
This gives angle 1 = 29 degrees
Hence x =Twice angle 29 = 58 degrees (since x is angle subtended at the centre hence twice)
b) LMN is right angled since LN is diameter of the circle
Since LM = MN we get 2x-5+2x-5+90 = 180
Or 4x = 100
X =25 degrees
Qno.2
a) Consider quadrilateral CLMN. Angle L and N are 90 degrees since tangents
Hence using sum of angles property of quadrilaterals
90+90+50+mlON = 360
Hence mlON = 360-230 = 130 degrees
b) If O is centre then SOT is right triangle since ST is...