59o
60o
75o
76o
Correct answer is A
Cos θ = 4(12)+(−5)(3)√122+(−5)2√42+32
Cosθ = 48−15(√189)(√25)
θ=cos−1 (3361.28)
θ = cos−10.5367
θ = 59o
Find the value of the constant k for which a=4i−kj and b=3i+8j are perpendi...
Given that r = (10 N , 200º) and n = (16 N , 020º), find (3r - 2n). ...
The variables x and y are such that y =2x3 - 2x2 - 5x + 5. Calculate the corresponding cha...
The probability that Kofi and Ama hit a target in a shooting competition are 16 and \(\...
The 3rd and 6th terms of a geometric progression (G.P.) are 83 and 6481 re...
Four fair coins are tossed once. Calculate the probability of having equal heads and tails. ...
Find the range of values of x for which 2x2 + 7x - 15 ≥ 0....