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sin^2 75^@-sin^2 15^@=...

`sin^2 75^@-sin^2 15^@`=

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The value of sin^2 75^0-sin^2 15^0 is a. 1//2 b. sqrt(3)//2 c. 1 d. 0

sin^2 75^@+cos^2 75^@=

sin^2 75^@+cos^2 75^@ = …………………

Prove that: cos 105^@+cos15^@=sin 75^@-sin 15^@

( sin 75^(@) - sin 15^(@))/( cos 15^(@) - cos 75^(@))=

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

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

Simplify (sin 75^(@)-sin 15^(@))/(cos 75^(@)+cos 15^(@))

Prove that sin 75^(@) - sin 15^(@) = cos 105^(@) + cos 15^(@)