5√36
3√156
5√612
5√312
Correct answer is C
(3√6√5+√543√5)−1
= √5(3√5)3√6+3√6
= 3∗56√6=52√6
= 5∗2√62√6+2√6=10√64∗6
= 5√612
Calculate, correct to one decimal place, the angle between 5 i + 12 j and -2 i + 3 j ...
The position vectors of A and B are (2i + j) and (-i + 4j) respectively; find |AB|. ...
A binary operation, Δ, is defined on the set of real numbers by aΔb=a+b+4....
The 3rd and 7th term of a Geometric Progression (GP) are 81 and 16. Find the 5th term. ...
Find the unit vector in the direction of −2i+5j....
Given that sinx=45 and cosy=1213, where x is an obtuse angle and y i...
A stone is thrown vertically upward and distance, S metres after t seconds is given by S = 12t ...