Question

(1) tan 48° tan 23° tan 42° tan 67° = 1
(ii) cos 38° cos 52°- sin 38° sin 52° = 0
please slove it​

Answer 1

Answer:

calculate kr Lo aae ga ans

Step-by-step explanation:

try kr k Bol na bhi aaya to me and Dugi OK thank

Answer 2

Answer:

(i) tan (90-45) tan 23 tan 42 tan (90-23)=1

cot 42 tan 23 tan 42 cot 23=1

1/tan 42 x tan 23 x tan 42 x 1/tan 23=1

1=1

1

(ii)cos 38 cos (90-38)- sin 38 sin (90-38)

=cos 38 sin 38 - sin 38 cos 38

=0