Answer:
see explanation
Step-by-step explanation:
Using sum to product identities
cos x - cos y = - 2sin(
)sin(
) = 2sin(
)sin(
)
cos x + cos y = 2cos(
)cos(
)
Note that
sin10° = sin(90 - 10)° = cos80°
Thus
← cancel 2 from numerator/ denominator
=
× 
= tan45° × tan35° { tan45° = 1 ]
= 1 × tan35°
= tan35° ← as required
1 and 8
because they are exterior angles because they are on the outside and alternate because they are on opposite sides
His First Play Was 750 Points
(1st Play) 750 (second play) -250
750 - 250 = 500
Hi there!
45 mi to 40 min = 1.125 mi per min
45 ÷ 40 = 1.124
Hope this helps!