Which of these is equal to cos 47°?
a. cos 43°
b. sin 43°
c. tan 43°
d. cos 133°
B.....
cos (47°)= sin (90°-47°)=sin (43°) [complementary angles]
Answer B
Answer:
Step-by-step explanation:
Q1)
Use Phythogoras theorem:

Q2)
Apply phythogoras theorem:

Q3)
Apply phythogoras theorem again:

I have an attached an image for Question 2 for better understanding the length of DE in question equals 15 - 6 = 9
The slope is positive
(2)
The bakery made 3 batches of bicuits.
3/10=0.3
3/5=0.6
if 0.3 is 1 batch then 0.6 is 2 batches 1+2=3