Math, asked by Lanom, 1 year ago

A+B+C =90 (degrees) then summation cos(A+B) /cosAcosB =

Answers

Answered by ayyappasunandapd8d4q

6

Answer:

2

Step-by-step explanation:

use the formulas

1. cos(A+B)=cosAcosB-sinAsinB

2.tanAtanB+tanBtanC+tanCtanA=1

Attachments:

Answered by vinaygeetha2004

0

Answer:

2

Step-by-step explanation: put a=30 degrees, b=60 degrees and c=0 degrees and verify

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