If sin A = 3÷5 then find sin²A
1 answer:
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Answer:
- 3108
Step-by-step explanation:
The sum to n terms of an arithmetic series is
=
[ 2
+ (n - 1)d ]
Substitute the given values into the formula
=
[ (2 × - 26) + (23 × - 9) ]
= 12 ( - 52 - 207 )
= 12 × - 259 = - 3108
For this case we have to evaluate the following expression,
We must follow the steps below:
We convert the mixed number into a fraction:
We multiply the fractions, taking into account that:
We simplify:
We convert to mixed number:
Answer: