Prove cos(x+y)+cos(x-y)=2cosxcosy

1 answer:

NISA [10]3 years ago

6 0

Work shown above! Hope ya understand!

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trasher [3.6K]

-16.8 * -10= 168 is the answer

4 0

3 years ago

KATRIN_1 [288]

You need to use pythagorean’s theorem. so a^2+b^2=c^2.

in this case it would be 6^2+8^2=c2

36+64=100

the square root of 100 is 10

x=10

7 0

2 years ago

jonny [76]

1st group it’s obvious the numbers go from small to big

8 0

4 years ago

Nina [5.8K]

Answer:

Follows are the solution to this question.

Step-by-step explanation:

Please find the solution file for the question in the attachment.

5 0

3 years ago

inysia [295]

Answer:

Step-by-step explanation:

8% in decimal form is written out as 0.08, so right away the answer is either C or D.

Then if you have "s" = 1875, you would get:

350 + (0.08 × 1875) = 500

That would mean any number greater than 1875 will give you a total more than 500.

Therefore the answer is D.

8 0

3 years ago