Sin (A + B) = sin A cos B + cos A Sin B
<span>Cos (A - B) = cos A cos B + sin A sin B </span>
<span>=> (SinACosB+ CosASinB) (CosACosB +SinASinB) </span>
<span>=>SinACosACos^2B+Sin^2ACosBSinB+Cos^2A... </span>
<span>=>SinACosA(Cos^2B+Sin^2B) +SinBCosB(Sin^2A+Cos^2A) </span>
<span>we know that Sin^2+Cos^2=1 </span>
<span>=>SinACosA(1)+SinBCosB(1) </span>
<span>=SinACosA+SinBCosB </span>
<span>Proved
</span>
Answer:
11/8 in mixed form would be 1 3/8.
Step-by-step explanation:
Please brainliest if possible!
If you add 2 odd numbers together eg. 5+5 it would become an even number eg. 10.
If you add 2 even numbers together eg. 60+60 it would stay as an even number eg.120.
The product is basically the same thing as that but instead of adding the same number twice, you multiplying the number with 2 which is the same as adding two of the same numbers.
Answer:
1)72=-8-5n
+8 +8
2)80=-5n
/-5 /-5
3)-16=n
Step-by-step explanation:
Answer:
The only true statement is c. Brett will have 3/8 of his income left after buying the video game and putting money in savings.
Step-by-step explanation:
In order to find this, start by subtracting the fractions of what he'll be spending from the total he has to start.
5/6 - 1/8 - 1/3
Now give them all common denominators
20/24 - 3/24 - 8/24
9/24
Now simplify the fraction.
3/8
