jika 0 < x < phi / 2 dan cos x = p, maka tan x + sin x =

Kelas 10 Matematika
Bab Trigonometri Dasar

0 < x < π/2 → ( kuadran I )

cos x = p
cos x = p/1 → x/r

y = √(r² - x²)
y = √(1² - p²)
y = √(1 - p²)

tan x + sin x
= y/x + y/r
= (√(1 - p²))/p + (√(1 - p²))/1
= (√(1 - p²))/p + (p √(1 - p²)/p)
= (1/p) . ((√(1 - p²) + p √(1 - p²))