1.

यदि `0^(@) lt theta lt 90^(@)` है तो `sintheta+costheta` तो मान ज्ञात करे ?A. equal to 1B. greater than 1C. lesss than 1D. equal to 2

Answer» Correct Answer - b
for greater value, take `theta=45^(@)`
`rArrsintheta+cos theta`
`=sin 45^(@)+costheta`
`=sin45^(@)+cos45^(@)`
`=(1)/sqrt(2)+(1)/sqrt(2)=(1+1)/sqrt(2)=(2)/sqrt(2)xxsqrt(2)/sqrt(2)=sqrt(2)`
`sqrt(2)=1.414gtrArr` greater than 1


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