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if x = y = z, then cos^2x + cos^2y + cos^2z –2 cosx cosy cosz is

laxman , 10 Years ago
Grade 11
anser 2 Answers
Nishant Vora

Last Activity: 10 Years ago

Hello student, Please find the answer to your question below

cos^2x + cos^2y + cos^2z –2 cosx cosy cosz
= 3 cos^2x- 2 cos^3x
= cos^2x (3 – 2 cos x)
….….….….….….…..


Thanks

Jeremy

Last Activity: 8 Years ago

(cos 40)^2 + (cos 70)^2 + (cos ∂) = 1
  • Solve for ∂ …............................................. Thanks

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