1+cos 2a Express without the double angles. sin 2a-cos a 2 cos a 2 sin a+1 2 sin a-1 2 cos a 2 cos a 2 sin a-1 2 sin a 2 cos a-1

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A: rewrite -5 as -5=-5+0i comparing with z=a+bi a=-5 , b=0 R=a2+b2=-52+02=25+0=25=5 now…

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A: The given identity is,

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A: We are given the expression:sin(π+A)cos(π−A)tan(π+A)−cosAcos(π−A) Let us break it down step by step…

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Q: sin? 0 + cos? 0 sin 20 OP- 10.

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