2 Answered Questions for the topic Class 12

02/22/19

#### Find a vector whose magnitude is 3 units and which is perpendicular to each of the vectors a=3i+j-4k and b=6i+5j-2k

Vector algebraClass 12 CBSE

#### MATHS INVERSE TRIGNOMETRY PRINCIPAL VALUES

For finding the principal value,in this question:Find the principal value of cot-1(-1/√3)The answer is cot(π-π/3) which is cot (2π/3)why is it not just -π/3?In a similar question, Find the...
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