Question

in a right angled triangle ABC,angle A=90° and tanB=1,then find the measure of angle B in degree if 2sinB.cosB=1(draw the figure also)
answer me fast plz
as soon as possible​

Answer 1

Answer:

ABC is a right angled triangle,

where angle A = 90⁰

here , tanB = 1

=> tanB = tan45⁰

=> B = 45⁰

so, angle B is 45⁰.

Now,

2sinB cosB

= 2 sin45⁰ cos45⁰

= 2 × (1/√2) × (1/√2)

= 1 ✓✓