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" / "105." If "sin theta=(1)/(2)," then ...

" / "105." If "sin theta=(1)/(2)," then show that "3cos theta-4cos^(3)theta=0

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If sin theta=(1)/(2), show that (3cos theta-4cos^(3)theta)=0

If sin theta = 1/2 , show that 3 cos theta - 4 cos^(3) theta = 0 .

If sin theta=sqrt3/2 then prove that 4cos^3 theta-3cos theta=-1

If 3sin theta+5cos theta=5, then show that 5sin theta-3cos theta=+-3

If sin theta- cos theta=0 then show that sin^4 theta+cos^4 theta=1/2

If sin theta+sin^2theta=1 , show that cos^4theta+cos^2theta=1 .

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