If cosα/cosβ = m and cosα/cosβ = n Show that (m^2+n^2)cos^2β= n^2.
brainywe:
sorry this is my mistake.....i have posted wrong answer. Actually i was solving another question but instead of posting there i did it hear
I m also solving this question but couldn't get result according to this question...so please check the question once again..
sorry but which photo
Answers
Answered by
1
using formula [cos(X-Y)=cosXcosY+sinXsinY
sin(An+A)sin(An+2A) + Cos(An+A)Cos(An+2A)
X=(An+2A)
Y=(An+A)
putting these in above formula÷
Cos(X-Y)= Cos[(An+2A)-(An+A)]
=CosA
proved....
sin(An+A)sin(An+2A) + Cos(An+A)Cos(An+2A)
X=(An+2A)
Y=(An+A)
putting these in above formula÷
Cos(X-Y)= Cos[(An+2A)-(An+A)]
=CosA
proved....
Similar questions
Physics,
7 months ago
Math,
7 months ago
Accountancy,
7 months ago
Science,
1 year ago
English,
1 year ago