c0hapitaAlychinaant c0hapitaAlychinaant

26-12-2016
Mathematics

Answered

The expression (secx + tanx)2 is the same as _____.

A.1 + 2cscx

B.sec2x + 2cscx + tan2x

C.sec2x + tan2x

D.1 + 2tan2x + 2secx tanx

Verified Answer :

MissPhiladelphia MissPhiladelphia

27-12-2016

(secx + tanx)^2
secxsecx + secxtanx + secxtanx + tanxtanx
secxsecx + 2secxtanx + tanxtanx
tanxtanx + 1 + 2secxtanx + tanxtanx
2tanxtanx + 1 + 2secxtanx

The expression (secx + tanx)2 is the same as 1 + 2tan2x + 2secx tanx. The answer is letter D.

Answer Link

SenpaiTrill SenpaiTrill

27-12-2016

Hello there.

The expression (secx + tanx)2 is the same as _____.

D.1 + 2tan2x + 2secx tanx

Answer Link

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