In a right triangle ABC right angled at C is which ab is equal to 30 cm BC is equal to 5 cm find cos square b + sin square B?? Plzzz Make it Soon Don't give wrong .
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Step-by-step explanation:
tan30
∘
=
BC
AB
⇒BC=
tan30
∘
AB
BC=5
3
AC
2
=AB
2
+BC
2
AC
2
=5
2
+(5
3
)
2
AC
2
=25+75
AC=10
Hence sides are 5,5
3
,10cm
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