Question

Tan x=3/4 in thee third quad find cos x/2

Answer 1

Step-by-step explanation:

tanx=3/4

cosx=4/5

cosx=2cos^2x/2-1

4/5=2cos^2x/2-1

9/5=2cos^2x/2

cos^2x/2=9/10

cosx/2=√9/√10

ans.

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