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1) State fundamental Theorem of Arithmetic and given example.2) Ifa and are the zeros of px?+qx+r = 0, then determine the relationship between zeros and coefficients.3) When a pair of linear equations of two variables represents two parallel lines? Give an example.4) If sec 4A = cosec(A -20°), find the value of A.5) When a rational number in the form is said to be non terminating repeating?6) Use Euclid's algorithm to show that the cube of any positive integer is of the form 9 or 99+1 or 9+3.7) Obtain all zeros of 3x + 6x-2x - 10x-5, if two of its zeros are and8) Solve 2 and 1.9 l boat goes 12 km upstream and 44 km downstream in 8 hours. It can go 16 km upstream and 32 km downstreaIn same time. Find the speed of the boat in still water and the speed of the stream.101 1f sec A=5. then show that 2 Cos A-sin A-12cot A-tana 7 |
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Answer» sec4A= cosec(A-20)cosec(90-A)=cosec(A-20)90-A=A-2090+20=A+A110=2AA=110/2=55 2 cosA- secA/cosA/ sinA- sinA/ cosA=2 cosA-5=12/7; 2cosA=12/7+5=17/7 |
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