Question

sin^-1 3/5+cosec^-1 5/4​

Answer 1

Answer:

correct answer is

$\pi \div 2$

Step-by-step explanation:

. is 3 how? SEE,

rnsin -1(x/5) + cosec -1(5/4) = د€/2

rnsin -1(x/5) + cos-1(3/5) = د€/2

rnsin -1(x/5) + د€/2 - sin -1(3/5) = د€/2 (((((Because sin -1x + cos -1x = د€/2)))))

rnsin -1(x/5) - sin -1(3/5) = 0

rnsin -1(x/5) = sin -1(3/5)

rnx/5 = 3/5

rnx = 3