Question

i need help with this

Answer 1

Answer:

1-sinA/1+sinA=(secA-tanA)^2

Answer 2

Answer:

Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.

bro I can't clear