[sin67^(@)+cos75^(@)" To "0^(@)" And "45^(@)" Angles between "],[" Please do. "]

If cot 3x= sin 45^(@) cos 45 ^(@) + cos 60 ^(@) , find the value of x between 0^(@) and 90 ^(@)

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

Evaluate: sin 15^(@)cos 15^(@)-cos 75^(@)sin75^(@)

Express sin67^(@)+cos75^(@) in terms of trigonometric ratios of angles between 0^(@) and 45^(@)

Express: sin 67^@ + cos 75^@ in terms of angles between 0^@ and 45^@ .

Prove that (i) " sin " 80^(@) "cos " 20^(@) - " cos " 80^(@) " sin " 20^(@) =(sqrt(3))/(2) (ii) " cos " 45^(@) " cos " 15^(@) - " sin " 45^(@) " sin " 15^(@) = (1)/(2) (iii) " cos " 75^(@) " cos " 15^(@) + " sin " 75^(@) " sin " 15^(2)= (1)/(2) (iv) " sin " 40^(@) " cos " 20^(@) " + cos " 40^(@) " sin " 20^(@) =(sqrt(3))/(2) (v) " cos " 130^(@) " cos " 40^(@) l + " sin " 130^(@) " sin " 40^(@) =0

Find the values of sin75^(@), cos75^(@), tan75^(@) and cot75^(@) .

Express sin 67^(@)+cos75^(@) in terms of trigononmertic ratios of angles between 0^(@)and 45^(@) .

Express sin 67^(@)+cos75^(@) in terms of trigononmertic ratios of angles between 0^(@)and 45^(@) .