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Prove that -4le5cos theta +3 cos (theta...

Prove that `-4le5cos theta +3 cos (theta+pi/3)+3le10` for all values of `theta`

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PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
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  3. Prove that -4le5cos theta +3 cos (theta+pi/3)+3le10 for all values of...

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  4. Find the maximum value of1+sin(pi/4+theta)+2cos(pi/4-theta) for all re...

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  5. Find cos(alpha+beta) if tan(alpha/2) and tan (beta/2) are roots of the...

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  6. If sec alpha and cosec alpha are the roots of x^2-px+q=0 then prove...

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  10. Prove that the value of underset(r=0)overset10sum cos^3((rpi)/3) is eq...

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  11. If sinx+cosx=m and secx+cosecx=n prove that n(m^2-1)=2m

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  12. if xsin^3theta+ycos^3theta =sin theta cos theta and x sin theta -y cos...

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  13. Show that (sin^2 theta)/(1-cot theta)+(cos^2 theta)/(1-tan theta )=1+s...

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  14. If a sec alpha +btan alpha=d and bsec alpha +a tan alpha=c prove that ...

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  15. If a cos^3theta +3a cos theta sin^2theta =x and asin^3theta+3a cos^2th...

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  16. If cos alpha =1/2(x+1/x),cos beta=1/2(y+1/y) then evaluate cos(alpha-b...

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  19. Without using tables prove that (sin12^@)(sin 48^@)(sin 54^@)=1/8

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  20. In any triangle prove that cot(A/2)+cot (B/2)+cot(C/2)=cot(A/2)cot(B/2...

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