Question 8
The ratio 3 : 8 is equal to (a) 3.75 % (b) 37.5 % (c) 0.375 % (d) 267 %
Given, ratio = 3 : 8 In percentage, 38×100%=37.5%
In a Δ ABC, 2a2+4b2 + c2=4ab+2ac,then cos B is equal to
Question 18
223÷5 is equal to
(a) 815 (b) 403 (c) 405 (d) 83
In triangle ABC, ∠B= 30∘, ∠C=45∘. If CD = 8 cm, then AB is equal to
The value of 10∑r=0 cos3 πr3 is equal to