Question

What is the value of​

Answer 1

Answer:

8+1+1/√2

9+1/√2

Step-by-step explanation:

we know that

sin(90-x)= cosx

and cos^2x+ sin^2x= 1

for ex sin^2 85= sin^2(90-5)= cos^2 5

cos^2 5+sin^2 5= 1

similarly all gives 1,1, ..... (8)

except sin 90° ,sin 45°

so the answer is 8+ sin90° +sin 45°