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(cos 15^@ + sin 15^@)/(cos 15^@ - sin 15...

`(cos 15^@ + sin 15^@)/(cos 15^@ - sin 15^@)=` (i)`1` (ii)`sqrt3` (iii)`1/sqrt3` (iv) `2+sqrt3`

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(sin 75^(@) - sin 15 ^(@))/( cos 75^(@) + cos 15 ^(@)) = (1)/(sqrt3)

(cos 75^(@)+cos15^(@))/(sin75^(@)-sin 15^(@))=sqrt(3)

(cos 75^(@)+cos15^(@))/(sin75^(@)-sin 15^(@))=sqrt(3)

Prove the following: frac(cos15^@-sin15^@)(cos15^@+sin15^@)=1/sqrt3

Prove that cos 15 ^(@) - sin 15^(@) = (1)/(sqrt2)

(sin75^(@) - sin 15^(@))/(cos 75^(@) + cos 15^(@)) A) -sqrt3 B) sqrt3 C) (1)/(sqrt3) D) (1)/(sqrt3)

(iii)Prove that (cos15^@-sin 15^@)/(cos 15^@+sin 15^@)=tan 30^@ .

Prove : cos15^(@) - sin15^(@) = 1//sqrt2 .

Prove that (sin75^(@)+sin15^(@))/(sin75^(@)-sin15^(@))=sqrt3