## Math 10 Chapter 8 - Part B

 1. In a right angled triangle ABC in which m|B = 90othe side opposite to < A = ____________Click here to enter your answer!
 2. In a right angled triangle ABC in which m AC = 10cmm BC = 6cm then mAB = ___________a) 8cm b) 6cmc) 10cmd) 12cm
 3. Sin2q = 1 � ( ___________)a) Cos2q b) Tan2qc) Sec2qd) Cosec2q
 4. tan2 q = Sec2 q � ( ________________ )a) 3 b) 2c) 4d) 1
 5. Cosec2 q � ( _____________ ) = 1a) Tan2q b) Sec2qc) Sin2qd) Cot2q
 6. The angle made between the horizontal line AD and a line from the eye �A� to the object �C� (below D) is called the angle of elevation.a) Falseb) True
 7. If side of a square field is 60m long, the lengths of the diagonals of the field is equal to 60Ö2a) Trueb) False
 8. In a right angled triangle ABC in which m B = 90o, mA = 30o, m C = 60o, a = 2 then b= 4a) Trueb) False
 9. In a right angled triangle POR in which m|R = 90o m|P = 60o, m|Q = 30o Ö p = 3, r = 2 then q = 2a) Falseb) True
 10. If Sin45o = Cos45o =Ö 1/ 2 then 5CoS45o � 3Sin 45o = 2a) Falseb) True
 11. (1+Sin q) (1-Sin q) = 1/Sec2 qa) Trueb) False
 12. In right angled ABC, m |C = 90o and m|A = m|B, then a = ____________a) b+ c b) bc) a+cd) c
 13. CoSec (90o � Φ) = _____________a) Sec Φ b) Sin Φc) Cos Φd) Sec q
 14. In right angled triangle ABC, if m|C = 90o then by Pythagoras theorem C2 = _________a) a2-b2 b) a2c) a2 + b2d) b2
 15. Sin2q + Cos2 q= ___________a) Tan2 q b) 1c) Cot2 qd) Sec2 q
 16. 1 + Tan2 q = _____________a) Sin2 q b) Cot2 qc) Sec2 qd) CoSec2q
 17. The value of Cot 60o = ________a) Ö3 b) Ö2/3c) Ö3/2d) Ö1/3
 18. (Sin x + Cos x)2 =a) 1+ Sin x Cos x b) 1-2Sin x Cosc xc) Sin2x + CoS2xd) 1+2Sin x CoS x
 19. Sinq x Secq/Tanq = ________________a) Cosec q b) Cosqc) Cotqd) 1
 20. Cosq FONT FACE="Symbol">Ö1+ Cot2 = _______________a) Tanq b) Sec qc) Cotqd) Cosecq

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