If sin theta +cos theta = p then cos²2theta is
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1
Answer:
sin Ø + cos Ø=p
cos Ø=p- sinØ
Squaring on both sides
(cos Ø)² =(p-sinØ)²
cos²Ø=(p)²+(sinØ)²-2(p)(sinØ)
cos²Ø=p²+sin²Ø-2p•sinØ
Answered by
0
Answer:
P4+2P2
Step-by-step explanation:
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