Find the exact value under the given conditions.cos ? = 
, 0 < ? < 
; sin ? = - 
, - 
< ? < 0Find tan(? + ?).
A. 
B. 
C. 
D. 
Answer: D
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Decide whether the pair of lines is parallel, perpendicular, or neither.The line through (3, -5) and (-1, 7) and the line through 
and 
A. Neither B. Perpendicular C. Parallel
Provide an appropriate response.Give the bounds of summation and the index of summation for 
What will be an ideal response?
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = 
, 0 < ? < 
Find sin 
.
A. 
B. 
C. 
D. 
Why has Lev Vygotsky's sociocultural theory become increasingly influential in developmental psychology?
What will be an ideal response?