Here is some thoughts on this:

cos 57 = sin (90-57) = sin 33

so cos 57 . cosec 33 = cos 57 / sin 33 = sin 33 / sin33 = 1

2 cos 60 = 2 * 1/2 = 1

so the last 2 parts work out to 0

now we have to find cos 70 / sin 20

sin 20 = cos 70 so this comes to 1

so finally the answer is 1

4 0

2 years ago

PLEASE HELP ILL MARK YOU THE BRAINLIEST ASAP!!

Ratling [72]

Answer:

second 1 is right

Step-by-step explanation:

it is righttttt

4 0

2 years ago

Read 2 more answers

The map of a walking trail is drawn on a coordinate grid with three points of interest. The trail starts at R(−3, 2) and goes to

Bogdan [553]

Answer:12

Step-by-step explanation:

5 spaces from (-3,2) to (2,2) and 7 spaces from (2,2) to (2,-5)

3 0

2 years ago