Question

maths answers plz firends ​

Answer 1

1> sin Q=5/4

CosQ=

SIN²Q+COS²Q=1

25/16+COS²Q=1

COS²Q=1-25/16

=16-25/16

=-9/16

CosQ=3/4

2>Sin²Q+COT²Q

=>1+ 0

=>1

3>COSA

4>1

5>Q=60°

6>1/4-1/4

=0