Question

cos 45
Sec 30'+Cosec 30'​

Answer 1

we know that

cos 45°=1/√2

sec 30°=1/cos 30°

=1/(√3/2)

=2/√3

cosec 30°=1/sin30°

=1/(1/2)

2

Hence,

cos 45° 1/√2

------------------------- = ------------------------

sec30°+cosec30° (2/√3+2/1)