Question

Find the exact value of (sin7.5cos7.5)(sin7.5+cos7.5)(sin7.5-cos7.5)(tan7.5)(cot7.5)

Answer 1

This is in degrees

Answer 2

it is -1/8 i think

Answer 3

It is, but I don't know how to get there

Answer 4

yes
here are steps
(sin7.5cos7.5)it is (sin15)/2
then
(sin7.5+cos7.5)(sin7.5-cos7.5)=-cos15
then
tanxcotx=1
so at last u get
-(sin15.cos15)/2
then
it is -(sin30)/4
which is equal to -1/8

Answer 5

hope u get it cleared
@MrFrizzy

Answer 6

Where did you get the 4 from in -(sin30)/4??

Answer 7

it simply sinxcosx=(sin2x)/2

Answer 8

Ah, I see now! Thanks!