Please solve the following sum or difference identity.
2 answers:
Answer:

Step-by-step explanation:
Given:


Need:

First, let's look at the identities:
sum: 
difference: 
The question asks to find sin(A - B); therefore, we need to use the difference identity.
Based on the given information (value and quadrant), we can draw reference triangles to find the simplified values of A and B.
sin(A) = 
cos(A) = 
sin(B) = 
cos(B) = 
Plug these values into the difference identity formula.


Multiply.

Add.

This is your answer.
Hope this helps!
GIVEN:
sinA = 24/25
sinB = - 4/5
IDENTITIES:
- sin(A + B) = sinAcosB + cosAsinB
- sin(A - B) = sinAcosB - cosAsinB
ANSWER:
We have find the unknown trigo ratio by constructing a given right angled triangle using trigonometric function.
We know the identity of difference, so we have to just plug the respective value.
sin(A - B) = sinAcosB - cosAsinB
- (24/25 × 3/5) - (7/25 × - 4/5)
- 72/125 - (- 28/125)
- 72/125 + 28/125
- 100/125 = 4/5.
Hence, sin(A - B) = 4/5.
You might be interested in
The equation is 24=23.50+0.25r
Answer:
7644
Step-by-step explanation:
Hope this helps!
Answer:
0.3 mph
Step-by-step explanation:
Yee
6.83 as a mixed number is:
6 83/100
2 x 3^2
2 x 9
18
18 is the answer