Question

sin 30 degree value

1st will be brainiliest

Answer 1

Sin 30′=1/2

Value came from-

Square root of 1/4=1/2 =Sin30

Square root of 2/4=Sin 45

Square root of 3/4= Sin 60

Square root of 4/4= Sin90

Just like Cos value is reciprocal of Sin-

Cos 60= value of Sin 30=1/2

Cos 45= value of Sin 45

Cos 30= value of Sin 60

Answer 2

$sin \: 30 = 1 \div 2 \\ value \: come \: from - \\ squuare \: root \: of \: 1 \div 4 = 1 \div 2 = sin30 \\ square \: root \: of \: 2 \div 4 = sin \: 45 \\ sqaure \: root \: of \: 3 \div 4 = sin \: 60$