Math, asked by parajulianita683, 4 months ago

1- tan32° tan13°-tan32°-tan13°=0 prove that​

Answers

Answered by ghatejanhavi74
1

Answer:

(1+tan32)(1+tan13)= 1+tan32+tan13+tan32tan13 ∵(1+a)(1+b)=1+a+ab

(1+tan23)(1+tan22)=1+tan22+tan23+tan22tan23

32+13=45

apply tan on both sides

tan(32+13)=tan(45)

⇒ \frac{tan32+tan13}{1-tan32tan13}=tan45

1−tan32tan13

tan32+tan13

=tan45 ∵tan(A+B)=\frac{tanA+tanB}{1-tanAtanB}

1−tanAtanB

tanA+tanB

⇒tan32+tan13=1-tan32tan13

⇒tan13+tan32+tan32tan13=1

similarly 22+23=45

⇒tan22+tan23+tan22tan23=1

substituting values in above equations

\frac{(1+tan32)(1+tan13)}{(1+tan23)(1+tan22)}=\frac{1+1}{1+1}

(1+tan23)(1+tan22)

(1+tan32)(1+tan13)

=

1+1

1+1

=1

Step-by-step explanation:

hope it helps you

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