Answer :
Answer:
0
Step-by-step explanation:
explanation is in above picture.
You just have to remember,
secA=1/cosA
(sinA)^2=1-(cosA)^2

Answer:
0
Step-by-step explanation:
explanation is in above picture.
You just have to remember,
secA=1/cosA
(sinA)^2=1-(cosA)^2