Question

sin 60° + cot 45° – cosec 30°
8. The value of
is
sec 60° - cos 30° + tan 45º​

Answer 1

Step-by-step explanation:

On the 3rd line of answer it is written as (L.C.M)

Answer 2

Given : sec 60° -cos 30° + tan 45 °

sin 60° + cot 45° - cosec 30°

To find: value of Given expressions

Solution:

we know values of :

sec 60° = 2

cos 30° = root 3/2

tan 45° = 1

sin 60° root 3/2

cot 45°= 1

cosec 30°= 2

Putting values in:

= sin 60°+ cot 45°- cosec 30°

= root 3/2+1+2

=(root 3 + 6)/2

Again,now:

=sec 60°- cos 30°+ tan 45°

= 2- root 3/2 +1

= 3 - root 3/2

=(6- root3)/2

Answer: Value of Given expressions is( root 3 +6)/2 and (6-root3 )/2