Question

i) P = { odd natursl numbet, 1 < ≤ 5 } How to write this set in roster form

a) {1,3,5} b) { 1,2,3,4,5 } c) { 1,3 } d) { 3,5 }​

Answer 1

Answer:

Value of tan45° and cot45° is 1.

tanθ=sinθ/cosθ

Sin45=1/√ 2

Cos45=1/√ 2

tan45=sin45/cos45 =1

tan45°=1

:-Cot is the reciprocal of tan so cot45°=1.