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Simplify cos 0 + cos0tan^20

Simplify Cos 0 Cos0tan20 class=

Sagot :

Answer:

sec theta

Step-by-step explanation:

we have this as follows;

cos theta +cos theta tan^2 theta

= cos theta (1 + tan^2 theta)

Recall;

1 + tan^2 theta = sec^2 theta

= sec^2 theta * cos theta

Recall;

sec theta = 1/ cos theta

= 1/cos theta * cos theta * 1/cos theta

= 1/cos theta = sec theta

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