Math Questions for SSC CHSL and RRB NTPC EXAM

Q5. If 7 cos^2⁡θ+3sin^2⁡θ = 4 and 0 < θ<π/2, then what is the value of tan θ?
(a) √7
(b) 7/3
(c) 3
(d) √3

Q6. If sec⁡α+tan⁡α = 2, then the value of sin⁡α is (assume that 0°<α<90°)

(a) 0.4

(b) 0.5

(c) 0.6

(d) 0.8

Q10. The angle of elevation of the top of a tower from the point P and Q at distance of ‘a’ and ‘b’ respectively from the base of the tower and in the same straight line with it are complementary. The height of the tower is

(a) √ab

(b) a/b

(c) ab

(d) a^2 b^2

Q14. The area of a triangle is 216 cm^2 and its sides are in the ratio 3 : 4 : 5. The perimeter of the triangle is:

(a) 6 cm

(b) 12 cm

(c) 36 cm

(d) 72 cm

Q15. The length of two parallel sides of a trapezium are 15 cm and 20 cm. If its area is 175 sq. cm, then its height is:

(a) 25 cm

(b) 10 cm

(c) 20 cm

(d) 15 cm

 

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