You can do it by using the Pythagorean identity: sin2x+cos2x=1. This can be rewritten two different ways: sin2x=1−cos2x. and. cos2x=1−sin2x. ... <看更多>
Search
Search
You can do it by using the Pythagorean identity: sin2x+cos2x=1. This can be rewritten two different ways: sin2x=1−cos2x. and. cos2x=1−sin2x. ... <看更多>