what is the answer ???? ... tell me fast ....
Attachments:
Answers
Answered by
1
Answer:
answer is 0.
Step-by-step explanation:
[sin (90°-43°)/cos 43°]²+[cos (90°-47°)/cos 47°]²-4cos²45
=(cos 43°/cos 43°)²+(sin 47°/sin 47°)²-4 ×(1/√2)²
=1² +1² -4×1/2
=1+1-2
=2-2
=0
souvik404k:
there is a squre over there
it doesn't matter i squared is 1 itself
hmm ... but it there ....
thanq also
Similar questions