Find the value for a that makes sins=cos25

Ans: 0.766

Step-by-step explanation:

Use the trig identity: cos (a + b) = cos a,cos b - sin a.sin b

cos (25 + 15) = cos (40) = cos 25.cos 15 - sin 25.sin 15.

The arc

40

∘

doesn't have exact functional value.

You may get its approx. value by calculator.

cos 40 = 0,766

Hi there!

In order to answer your question, you'll need to use the cross product method:

35 slices → 1 lb

2 slices → X lb

(1 × 2) ÷ 35 = X lb

2 ÷ 35 = X lb

0.05714286 = X lb OR = X lb

1 lb = $3.79

2/35 lb = $X

(3.79 × (2/35)) ÷ 1 = $X

0.21657143 ÷ 1 = $X

0.21657143 = $X

Your answer : 2 slices of cheese cost about $0.22 cents.

There you go! I really hope this helped, if there's anything just let me know! :)