यदि ` theta =30^(@) ` हो , तो सत्यापित करो कि ` cos 3 theta = 4 cos^(3) theta - 3 cos theta `

cos 4theta = cos 3theta - cos2theta

( cos 3 theta - sin 3 theta )/( cos theta+ sin theta ) =

cos theta cos2 theta cos3 theta=(1)/(4)

If cos theta + cos 2theta + cos 3theta = 0 then theta =

cos^(3)theta sin 3theta + sin^(3)theta cos3theta=3/4

( sin 3 theta )/( sin theta ) -(cos 3 theta )/( cos theta )=

2 cos theta - cos 3 theta - cos 5 theta - 16 cos^(3) theta sin^(2) theta =

If 3 sin theta=2 cos theta , then 3 sin theta=2 cos theta , then (4 sin theta-cos theta)/(4 cos theta+sin theta) is equal to: यदि 3 sin theta=2 cos theta है, तो 3 sin theta=2 cos theta , then (4 sin theta-cos theta)/(4 cos theta+sin theta) का मान क्या होगा ?