Home
Class 11
MATHS
Prove thatcos3A=4cos^3 A-3cosA...

Prove that`cos3A=4cos^3 A-3cosA`

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    PREMIERS PUBLISHERS|Exercise SOLUTION TO EXERCISE 3.1|23 Videos

  • TRIGONOMETRY

    PREMIERS PUBLISHERS|Exercise SOLUTION TO EXERCISE 3.2|19 Videos

  • TRIGONOMETRY

    PREMIERS PUBLISHERS|Exercise CHOOSE THE CORRECT ANSWER|62 Videos

  • SETS,RELATIONS AND FUNCATIONS

    PREMIERS PUBLISHERS|Exercise II. Choose the correct option for the following. (M.C.Q)|35 Videos

  • TWO DIMENSIONAL ANALYTICAL GEOMETRY

    PREMIERS PUBLISHERS|Exercise PROBLEM FOR PRACTICE (CHOOSE THE CORRECT OPTION)|28 Videos

Similar Questions

Explore conceptually related problems

Prove that ((cos^3A-sin^3A)/(cosA - sinA))- ((cos^3A + sin^3A)/(cosA + sinA))= 2sin A cos A

Prove that cosA -cosB -cosC =1-4sin(A/2)cos(B/2)cos(C/2) ,if A+B+C= pi

Prove that cos A cos 2A cos 2^(2) A cos 2^(3)A....cos 2^(n-1) A=(sin 2^(n) A)/(2^(n) sin A)

Prove that (cos 3x +cos 7x - cos 2x )/( sin 7x - sin 3x - sin 2x ) = cot 2x

Verify cos3A=4cos^(3)A-3cosA , when A = 30^(@)

Prove that (4cos^2 9^0-3)(4cos^2 27^0-3)=tan9^0dot

Prove that sin 4A=4 sin A cos^(3) A-4 cos A sin^(3) A

In triangleABC , prove that cos^(2)A+cos^(2)B+cos^(2)Cge(3)/(4) .

Prove that: (sin5A-sin3A)/(cos5A+cos3A)=tanA (sinA+sin3A)/(cosA+cos3A)=tan2A