Home
Class 10
MATHS
Is it right to say that cos(A + B) = cos...

Is it right to say that cos(A + B) = cos A + cos B. Justify your answer.

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    BEYOND PUBLICATION|Exercise EXERCISE|209 Videos

  • TANGENTS AND SECANTS TO CIRCLE

    BEYOND PUBLICATION|Exercise EXERCISE|157 Videos

Similar Questions

Explore conceptually related problems

Is it right to say that sin (A + B) = sin A + sin B? Justify your answer.

Is it right to say that sin (A+B) =sin A +sin B ? Justify your answer.

Is it right to say that cos ( 60^(@) + 30 ^(@) ) = cos 60^(@) cos 30 ^(@) -sin 60^(@) sin 30 ^(@)

Is it right to say cos(60^@ - 30^@) = cos 60^@ . cos 30^@ + sin 60^@. Sin 30^@ ?

A+B = 90^(@) rArr cos A cos B in

If sin A = sin B and cos A = cos B then A =

(c- b cos A )/( b - c cos A ) =

A + B = 90^(@) rArr cos A - cos B in