Question

sin 67.cos 23+ cos 67.sin 23÷
sec43.cosec 47 -tan 43.cot 47+1​

Answer 1

Answer:

sin 67 * sin 67 + cos 67 * cos 67

-----------------------------------------------------

sec 43 * sec 43 - tan 43 * tan 43 + 1

= sin^ 2 + cos ^ 2

-----------------------

sec ^ 2 43 - tan ^ 2 43 + 1

1

= -----

1 + 1

1

= ---------

2