Question

If thetha is an acute angle and sin thetha=cos thetha find the value of 2tan2thetha+sin2thetha-1

Answer 1

Answer:

Answer is given on the image.

Answer 2

Step-by-step explanation:

theta is actute angle,

now

sin theta = cos theta

so,

$\frac{sin \: theta}{cos \: theta} = 1 \\ tan \: theta \: = 1 \\ theta \: = 45$

now,

2tan 2 theta + sin2theta - 1

= 2 tan 2(45) + sin2(45) - 1

= 2 tan 90 + sin 90 - 1

= infinity + 1 - 1

= infinity