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सिद्ध करें की sin (270^@ +A)=-cos A...

सिद्ध करें की `sin (270^@ +A)=-cos A`

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sin(270^@+theta)=

cos A + sin (270 ^ (@) + A) -sin (270 ^ (@) - A) + cos (180 ^ (@) + A) = 0

If A = pi/2 , cos A + sin (270^(@) -A)+ cos (180^(@) +A)=

If A = pi/2 , cos A + sin (270^(@) -A)+ cos (180^(@) +A)= .................. A) -1 B) 0 C) 1 D) 1/2

Calculate the values of x between 0^(@) and 360 ^(@) which satisfy sin (270^(@) - x) = cos 292 ^(@).

The value of cos(270^(@) + theta) cos (90^(@)-theta) - sin (270^(@) - theta) cos theta is...

cos(270^@-theta) =

cos A + sin(270^(@) +A)-sin(270^(@)-A)+ cos(180^(@)-A)=

Prove that cos theta + "sin " (270^(@) +theta) - "sin "(270^(@) -theta) + "cos " (180^(@) +theta) =0