Question

(1-tan 30)cos 60=(1+tan 30)(1-tan 60)


this is another one
plz try ​

Answer 1

Answer:

Step-by-step explanation:

LHS ; 1-sin60°/cos60°

=(1-√3/2)/(1/2)

=(2-√3)/2×2/1

=2-√3

1- tan30°/1+tan30°

=1-1/√3 /1+1√3( tanking LCM)

=(√3-1)/(√3+1)

=(√3-1)(√3-1)/(√3+1)(√3-1)

=(3-2√3+1)/(3-1)

=(4-2√3)/2

=2(2-√3)/2

=2-√3

∴, LHS=RHS(Proved)