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rossi

Questions (3)

what is another form of: sin (A+B) sin (A-B)/ cos^2 A cos^2 Ba) cos^2 A - cos^2 B b) tan^2 A - tan^2 B c) tan^2 A - tan^2 B d)
1. 1 answer
2. 400 views
If cos theta= -sin theta, then sin^2 theta is?a) 1/4 b) 1/2 c) sqrt2/2 d) - sqrt 2/2 please show me how you got the answer!
1. 1 answer
2. 362 views
what is the exact value of sin^2 pi/6-2 sin pi/6 cos pi/6 +cos^2 (-pi/6)?a) 2- sqrt 3 b) 2- sqrt 3/ 2 c) 2+ sqrt 3/2 d) 2+ sqrt
1. 1 answer
2. 455 views