AaratrikRoy

THANK YOU. But other problem are not solved.

THANK YOU ALAN

Yes MELODY , you are right.

Ok.Thanks

Yes,ALAN you are right.

Please prove it

please send us your question

Thank You  MELODY and HEUREKA...

Thank You........heureka.

Solution

1

Simplify 40+140+1 to 4141

40×412−4040×412−40

2

Simplify 40×41240×412 to 1640216402

16402−4016402−40

3

Simplify 1640216402 to 820820

820−40820−40

4

Simplify

780780

Done

Solution

1

Multiply both sides by 1212

tan40×12=xtan⁡40×12=x

2

Switch sides

x=tan40×12x=tan⁡40×12

Done

Decimal Form: -13.4066

Check Answer ▲

tan40=x12tan⁡40=x12

1

Let x=tan40×12x=tan⁡40×12

tan40=tan40×1212tan⁡40=tan⁡40×1212

2

Cancel 1212

tan40=tan40tan⁡40=tan⁡40

Done