prove: 1. (1+cos x)/(sin x)+(sin x)/(1+cos x)=2csc x Solve: 2. sin(a+b) given that: sin a=4/5 and tan b= -1 3. cos(a+b) given that: cos a=4/5 and tan b= -1
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$\displaystyle \dfrac{1+\cos(x)}{\sin(x)}+\dfrac{\sin(x)}{1+\cos( x)}$ $\displaystyle =\dfrac{[(1+\cos(x))(1+\cos(x))]+[\sin(x)(\sin(x))]}{\sin(x)(1+\cos(x))}$ complete...
2 more to go lol.
Originally Posted by Chris69 2 more to go lol. How about you tell us how far you have gotten. Then we can assist you better. -Dan
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