Question

Plz help:)

Answer 1

Here I know that answer is wrong.
It should be 1/2.
Can't it be -1/2.

Answer 2

@ash2326 & @myininaya & @Hero Plz help:)

Answer 3

If \(\cos^{-1} (\frac 35)\)
can you find the angle?

Answer 4

4

Answer 5

Good:D

Answer 6

\[x \approx 53^o\]

Answer 7

So can you find
\[\tan (53/2)\]
use the half angle formula!!

Answer 8

k! I try this

Answer 9

good:) let me know if you need help

Answer 10

should I use this formula?