Question

Buktikan bahwa :
a. sin² M + cos² M = 1
b.sec² K - tan² K = 1
c. cotab K = cos K / sin K

Answer 1

Gambarnya kurang jelas

Answer 2

A.
sin²M+cos²M=1
(m/l)²+(k/l)²=1
m²/l²+k²/l²=1
(m²+k²)/l²=1
l²/l²=1
1=1

b.
sec²K-tan²K=1
(l/m)²-(k/m)²=1
l²/m²-k²/m²=1
(l²-k²)/m²=1
m²/m²=1
1=1

c.
cotanK=cosK/sinK
m/k=(m/l)/(k/l)
m/k=(m/l)x(l/k)
m/k=(l.m)/(l.k)
m/k=m/k

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