Question

Sin^2 5+sin^2 10+sin^2 15....sin^2 180

Answer 1

Answer: markme as a brainlist

Step-by-step explanation:

in^2 (85)= sin^2(90–5)= cos^2(5)

but we know sin^2 (x)+cos^2(x)=1

by using the above two property the equation solution will be

from 5 degrees to 40 degrees sin^2(x) will be there as usual and 50 degrees to 85 degrees sin^2(x) can be convert to cos^2(x) . sin^2(90) degrees and sin^2(45) will be separate which is 1 and 1/2.

(40/5) +1+(1/2) =9.5

so solution will be 9.5

Answer 2

Answer:

the above answer is wrong

correct answer is 18