Question

how to solve the following
1) cos( sin^ -1 (-3/5) )
2)cosec (cos^-1(-12/13))

Answer 1

@mathmate @ganeshie8 @Loser66 @e.mccormick @eyust707 @Preetha @wolfe8 @iPwnBunnies @paki @ShadowLegendX

Answer 2

what is it? it's not an equation to solve. At least, you have to have = sign on the expression

Answer 3

@Loser66 they are two different sums , we have to find the value of

Answer 4

I am sorry for my stupidness, I don't understand still. @Hero

Answer 5

\(\cos\left((\sin^{-1}\left(-\dfrac{3}{5}\right)\right)\) right?

Answer 6

yes right @Hero

Answer 7

First we have to find \(\theta\) since
\(\sin(\theta) = -\dfrac{3}{5}\)

Answer 8

Once you find theta, then you have to find \(\cos(\theta)\)

Answer 9

so what will be θ @Hero

Answer 10

If you can't use a calc, just set it up this way: