if cos A equally 2 upon 5 find the value of 4+4 tan square A
Answers
Answered by
8
hello there!!!
cosA=2/5
nowe we have
4+4tan²A
=>4(1+tan²A)
=> 4sec²A [ since sec²A=1+tan²A]
=> 4/cos²A [since 1/cosA=secA]
=>4/(2/5)²=>4÷4/25=>4×25/4=25
hope this was helpful to you :D
cosA=2/5
nowe we have
4+4tan²A
=>4(1+tan²A)
=> 4sec²A [ since sec²A=1+tan²A]
=> 4/cos²A [since 1/cosA=secA]
=>4/(2/5)²=>4÷4/25=>4×25/4=25
hope this was helpful to you :D
Similar questions