If cosA= 3/5 , find 9 cot^2 A-1.
Answers
Answered by
107
cosA = 3/5
sinA = 4/5
cotA = 3/4
9 cot²A – 1 = 9(3/4)² – 1 = 9×9/16 – 1 = 65/16
sinA = 4/5
cotA = 3/4
9 cot²A – 1 = 9(3/4)² – 1 = 9×9/16 – 1 = 65/16
Answered by
22
Answer:
Step-by-step explanation:
\* We know the Trigonometric identity:
sin²A = 1-cos²A *\
Now,
/* from (1)&(2)*\
Therefore,
•••♪
Similar questions
Math,
8 months ago
Psychology,
8 months ago
English,
8 months ago
Social Sciences,
1 year ago
Science,
1 year ago
English,
1 year ago
English,
1 year ago