x = ± 2√5
subtract 4 from both sides
- x² = - 16 - 4 = - 20
multiply both sides by ( - 1)
x² = 20
Take the square root of both sides
x = ± √20 ( note plus or minus)
x = ± √4 × 5 = ± √4 × √5 = ± 2√5
I need the same question
Answer:
sin c - 25/7
cos c - 7/24
tan c - 25/24
Step-by-step explanation: