GATUNDU SOUTH JOINT EXAMINATION FORM FOUR END OF THE TERM TWO EXAMINATION, 2025

GATUNDU SOUTH JOINT EXAMINATION
FORM FOUR END OF THE TERM TWO EXAMINATION, 2025
121/1
MATHEMATICS
PAPER 1
JULY, 2025
Time: 2½ Hours
SECTION 1 (50 marks)
Answer all the questions in this section.
1
2
3
4
1
4
2 𝑜𝑓 1 −5
1.Evaluate:
2.The interior angle of a regular polygon is 20o more than three times the exterior angle. Determine
the number of sides of the polygon
(2marks)
Name the polygon.
(1 mark)
An electrician made a loss of 30% by selling a multi plug at sh.1400.what percentage profit would
he has made if he sold the multi plug at sh. 2300.
(3mks)
0
Given that sin (90-x) = 0.8, where x is an acute angle, find without using mathematical table the
value of 2 tan x + cos(90-x)
(3marks)
4
2
Two numbers t and s are such that t x s = 5625. Find t and s
(3mks)
Find the obtuse angle the line with equation 2y+5x+2=0 makes with the x-axis.
(3mks)
Simplify the expression
(3mks)