Question

Sec theta + cos theta =1 then sec ^3 + cos^3

Answer 1

Answer:

sec³ $\theta$+cos³ $\theta$=-2

Step-by-step explanation:

Given sec$\theta$ +cos $\theta$=1  ⇒sec$\theta$ +cos $\theta$-1=0  -->(1)

if x+y+z=0 then x³+y³+z³=3xyz

By above equation eq(1) can be written as

sec³ $\theta$+cos³ $\theta$+(-1)³=3(sec $\theta$)(cos  $\theta$)(-1)

sec³ $\theta$+cos³ $\theta$=-3+1                                    

sec³ $\theta$+cos³ $\theta$=-2

Answer 2

Answer:

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