a+b+c=180∘ prove that cosa+cosb+cosc
Expert Community at Your Service
Solve your problem for the price of one coffee
=2cos(60)cos(a′)+0.5=cos(a′)+0.5.≤1.5.Also, as a+b approaches 0, the expression on the left <1+1−1<1. 1 is less than 1.5.As a+b approaches 180, the expression becomes cosa+cosb+1.Let a=90−a′ and b=90+a′,
less than 1.5.
See answers (1)
Ask your question. Get your
answer. Easy as that
See answers (2)
=3i+π+ck,v=4i−j−k, where is a constant.
(a) Compute ‖u‖,‖v‖, and u×v for the given vector in R3.
(b) Verify the Cauchy-Schwarz inequality for the given pair of vector.
Get answers within minutes and finish your homework faster
Dont have an account?
Create a free account to see answers
Already have an account?